Fill a large pot with water, add chicken tenderloins, and bring to a boil.
Lower heat, cover, and simmer for 8–10 minutes until chicken reaches 165°F.
Remove chicken, cool slightly, then shred with a hand mixer or food processor.
Dice celery finely using a food processor.
In a mixing bowl, combine mayonnaise, celery, onion powder, garlic powder, salt, and pepper with shredded chicken.
Fold in pineapple, grapes, and apples gently.
Stir well and serve immediately or refrigerate.
