If you choose to  eat in a chain restaurant just consider 2 things. Your calorie intake will probably be close to your daily allowance (with 1 meal) and you'll be paying at least 3 times food cost. So now that the 2,000 cal meal costing you $15.00 + tax is really a fattening $4+ worth of food.
When I occasionally go out, I pick small clean ethnic, made fresh on premises foods that I can't be bothered making at home (too many special ingredients or too much prep). If anybody can't find a fully cooked whole roasted chicken for the price of a restaurants 1/4 portion.....your dim.