You're always safe with a grilled, roasted, or baked meat or seafood and a double portion of veggies - potatoes don't count! If the restaurant is a really Southern place or somewhere known to be fattening, I'd ask for the veggies steamed or cooked in less oil.
If I don't have a calorie count nearby, I aim to eat something like that at any restaurant.
Plus, it feels more satisfying than a salad without dressing.