Yes, you can reheat parmesan bread bites by placing them in a preheated air fryer at 375 degrees Fahrenheit for 2 minutes. You can also reheat them in the toaster oven for a few minutes. The air fryer and the toaster oven are the best ways to reheat them and keep them crispy. Reheating in the microwave works, however, the parmesan bites will not be as crispy.