To make this Baked Pineapple Teriyaki Chicken (Hawaiian-Style) gluten free, replace the soy sauce with certified gluten-free tamari or gluten-free soy sauce. Confirm that the cornstarch, honey, apple cider vinegar, pineapple, chicken, spices, and nonstick cooking spray are gluten free. Use clean cookware, utensils, and prep surfaces to prevent cross-contact with gluten-containing ingredients.