Singapore has its famous hawkers markets, conveniently located throughout the city, where you wander around the stalls, pick the food that looks the tastiest, point to it, order it and dig in. The variety in these markets is part of the fun. And in KL's Chinatown, there is a night market up and down Jalan Petaling. Nearby, all the street corners house noodle shops and other informal eateries. Most of the Central District in Hong Kong has been converted into malls, but the Pacific Place food court has a surprising selection of Asian and Western food.
Proprietors generally speak English and the food is good as well as cheap.
For the faint of heart, western food is almost always available. In Hong Kong, the mall at Pacific Place is a comfortable option. Grappa's, a bustling Italian restaurant comfortably serves solo diners in their bar area. Many large office buildings are close by and professionals often stop by with their Asian Wall Street Journals for some pasta and a glass of wine at the end of the day. Dan Ryan's, a Chicago-style restaurant is a great place for getting an American burger and watching a football game.