3 oz. canned white tuna in water, drained
2 Tbsp. light mayonnaise
2 celery stalks, chopped
1/4 onion, chopped
Pepper to taste
2 tomato slices
1 whole-wheat pita round cut in half
Mix first five ingredients and stuff with tomato slices into pita halves.
570 calories, 33 g protein, 76 carbohydrate, 15 g fat.