Try the Northen barbeque, especially the sausage and ribs. Lunch buffets at Little Duck Hotel, Inn Come Hotel and Rimkok Resort offer great opportunities to sample a variety of Thai foods. Buffets also include Westen foods. Expect reasonable prices.
If you need your fix of pizza, fried chicken, burgers or beefsteak, a number of restaurants along Paholyothin Road should fill the bill. Some are expensive, others more reasonable. Have a look at the menu before ordering.