I recommend serving this dish fresh and warm. Feel free to make the waffles ahead of time and freeze them. When ready to serve the dish, you can reheat the waffles in a toaster or toaster oven. You can also freeze the seitan chicken prior to breading and air frying. I recommend making a large batch of the vegan chick'n at one time and storing it in the freezer so it's ready to go when you need it!