Elegant Chicken Salad

2 cups uncooked shell macaroni
1 cup mayonnaise
1 cup coleslaw dressing
4 cups cut-up cooked chicken
1/2 Tbsp. chopped onion
2 cups chopped celery
1 can (20 oz.) pineapple tidbits, drained
2 cups red or green seedless grapes (grapes cut in half)
2 cups chopped red apples

Cook and drain macaroni as directed on package. Rinse with cold water; drain. Mix macaroni and remaining ingredients. Cover and refrigerate to chill.