Robert William Flay (born December 10, 1964) is an American celebrity chef, restaurateur, and reality television personality.
 He is the owner and executive chef of several restaurants: Mesa Grill in Las Vegas and the Bahamas; Bar Americain in New York and at Mohegan Sun, Uncasville, Connecticut; Bobby Flay Steak in Atlantic City; Gato in New York, and Bobby's Burger Palace in 19 locations across 11 states.
Kerry Glen Simon (June 17, 1955 – September 11, 2015) was an American celebrity chef and restaurateur based in Las Vegas.
 Simon was also known by the moniker "Rock n' Roll Chef", given to him by "Rolling Stone".
 He was the executive chef and proprietor at his namesake restaurant "Simon" at Palms Place in Las Vegas.
 His other restaurants included Simon LA, in Los Angeles, Simon Prime in Atlantic City, New Jersey, along with KGB and Carson's Kitchen in Las Vegas.
Gavin Kaysen (born 1979 in Thousand Oaks, California) is executive chef and owner of Spoon and Stable Restaurant in Minneapolis, MN, and Bellecour in Wayzata, MN.
 He was, before that, the Executive Chef and Director of Culinary operations for Daniel Boulud in New York City, over seeing Cafe Boulud in Palm Beach, Toronto and New York City.
John Doherty (born circa 1958) is a prominent chef, who served as the executive chef of the Waldorf Astoria hotel in New York City for 23 years, leaving in 2009.
 He had served at the Waldorf for an entirety of 30 years, and became executive chef of the Waldorf in 1985 at the age of 27, the youngest person ever to be named to the position.
 He graduated from the Culinary Institute of America in 1978, where he was voted "most likely to succeed".
Geoffrey Zakarian (born July 25, 1959) is an American Iron Chef, restaurateur, television personality and author.
 He is the executive chef of several restaurants in New York City, Atlantic City and Miami.
 He is featured on several television programs on the Food Network, including "Chopped" and in 2011, "The Next Iron Chef", where he won the right to join "Iron Chef America".
Daniel Humm (born 1976 in Strengelbach) is a Swiss chef and restaurant owner; he is chef/co-owner of Eleven Madison Park and The NoMad in New York City, the former a recipient of three Michelin stars.
 His cuisine is focused on the locally sourced ingredients of New York, with an emphasis on simplicity, purity, and seasonal flavors.
 A native of Switzerland, he was exposed to a range of food at a very young age, and began working in kitchens at the age of 14.
 From there he spent time in some of the finest Swiss hotels and restaurants before earning his first Michelin star at the age of 24.
 In 2003, Daniel moved to the United States to become the executive chef at Campton Place in San Francisco where he received four stars from the San Francisco Chronicle.
 Three years later, he moved to New York to become the executive chef at Eleven Madison Park.
 In 2017, Eleven Madison Park became number 1 on the San Pellegrino World's 50 Best Restaurants.
Elizabeth Falkner (born in San Francisco) is a consulting chef working and living in New York who has been cooking since 1990.
 She frequently appears as a competitor and sometimes a judge on many of the cooking competitions on television from "The Next Iron Chef, Super Chefs", 2011 and "The Next Iron Chef, Redemption", 2012, (both Food Network), as well as "Chopped All Stars", (Food Network), "Top Chef Masters", "Top Chef", "", (Bravo), "Top Chef, Canada", "Food Network Challenge", (Food Network) on.
 Falkner was the executive/chef/pastry chef and managing partner of Citizen Cake for 14 years, and executive chef and co-owner/co-managing partner of Orson for 4 years, restaurants located in San Francisco, California, U.S..
 Both establishments closed in 2011.
 In 2012 Falkner won First Prize at the World Pizza Championships in Naples, Italy with her innovative "Finocchio Flower Power" pizza.
 Falkner relocated to Brooklyn, NY in 2012 and was employed at Krescendo for seven months.
Peter Orullian is an American fantasy author and musician.
 He currently resides in Seattle, Washington.
 He has had a variety of musical endeavors, beginning with involvement in an a cappella choir in high school.
Anthony Felix "Tony" Gemignani (born August 23, 1973) is a 12-time World Pizza Champion, master instructor at the International School of Pizza, two-time Food Network gold medalist, restaurateur, author and reality television personality.
 Gemignani is the president of the World Pizza Champions, is also a Guinness World Record holder and is the owner and executive chef of several restaurants.
 Gemignani coined the phrase "F&F"' to describe his restaurants; Restaurants which are Full Service and Fast Casual at the same time.
Lynn Crawford (born 1964) is a Canadian chef, trained at George Brown College in Toronto.
 She has one daughter, Addie Pepper Nicholson Crawford, born October 24, 2016 (with wife Lora Kirk), and one son Bradley "Brad" Crawford born in 1989.
She is known for her appearances on the hit Food Network show "Restaurant Makeover", which is seen in over 16 countries worldwide.
 She was formerly the executive chef at the Four Seasons in Toronto and the former executive chef of the Four Seasons in New York.
 She appeared on the Food Network's "Iron Chef America" (the third chef from Canada to do so), in a battle with Iron Chef Bobby Flay.
 The episode first aired on March 7, 2007 with peanut as the theme ingredient.
 Crawford lost the battle to Chef Flay.

Question: Which man, Geoffrey Zakarian or Peter Orullian, is the executive chef of several restaurants in New York City, Atlantic City and Miami?
Answer: Geoffrey Zakarian