Baking or re-frying are the best ways to reheat the vegan fried chicken until crispy. You can bake the vegan chicken from frozen (for 15-20 minutes at 450F/230C) or chilled (15-20 minutes at 350F/180C). Air frying also works – for about 5-7 minutes at 400F/200C. Alternatively, bring the fried tofu chicken back to room temperature and re-fry it in the oil until hot and crispy once more.