There are a few reasons you might want to use cornstarch on your chicken wings. First, it can help to create a crispier coating on the outside of the wing. This is especially useful if you're using a breading or batter. Second, cornstarch can help to thicken sauces and marinades, giving them a more intense flavor. Finally, cornstarch can be used as a binding agent, helping to keep the ingredients in a wing mixture together.