2 1/2 cups chopped cooked chicken breasts (about 1 pound)  | 
                                                1/2 cup matchstick-cut carrot  | 
                                                1/3 cup sliced almonds, toasted  | 
                                                1/3 cup light mayonnaise  | 
                                                1/4 cup finely chopped green onion  | 
                                                1/4 cup plain fat-free yogurt  | 
                                                1 tablespoon worcestershire sauce  | 
                                                1/2 teaspoon garlic powder  | 
                                                1/4 teaspoon salt  | 
                                                1/4 teaspoon black pepper  | 
                                                1 (8 ounce) can crushed pineapple in juice, drained  | 
                                                4 (6 inch) whole wheat pita bread, each cut in half  | 
                                                8 romaine lettuce leaves  |