Mediterranean Chicken Salad

Name: Mediterranean Chicken Salad
Ingredients: 1 cup plain Greek yogurt; 2 tablespoons lemon juice; 1 teaspoon ground cumin; 1/4 teaspoon crushed red pepper; 3 cups chopped, cooked chicken; 1 cup chopped red bell pepper (1 large); 1/2 cup chopped pitted green olives (about 20 small); 1/2 cup diced red onion; 1/2 teaspoon parsley, chopped; 1 (15-ounce) can no-salt-added garbanzo beans, rinsed and drained; 6 (6-inch) whole wheat pitas, cut in half; lettuce leaves; 6 slices tomato, cut in half