Question: how long to cook a whole frozen chicken at 350?
Answer: To safely cook chicken from frozen, roast it in the oven for 50 percent longer than a thawed chicken. Set your oven to 350 degrees Fahrenheit and place your chicken breast-side up in a large roasting pan. After about 90 minutes, increase the temperature to 450 degrees Fahrenheit and cook it for another 15-30 minutes.