Mittapheap Restaurant: This restaurant is considered to be one of the best in town. They have their menu in English available offering a huge range of Khmer dishes such as soups, noodle, and fish dishes.
Mekong Restaurant:
There is decent Khmer and Chinese food in this simple place. Mekong Restaurant:
This common restaurant has a wide range of Khmer, Chinese and international food. It's on the Battambang road. This is a place you might need a little while to tell the waiter or the cook what you'd like to eat. But with a little Khmer or just the global finger sign you'll have proper food. It's opposite of the bus station. Prices are quite reasonable.
General food points:
Be aware that most of the restaurants in Kampong Chhnang city close around 8 pm as it is quite usual for locals. During the day there is plenty of small places offering noodle dishes/soups next to the Phsar Leu und Phsar Chhnang market. You will also see several simple restaurants near the Khmer Monument Circle.