Store leftovers in an airtight container in the refrigerator for up to 3 days. The best way to reheat chicken tenders so they’re crispy and don’t dry out is either in a hot oven (or in an air fryer!). Preheat the oven to 400 degrees Fahrenheit and bake the tenders for about 15 minutes or until warmed through. To reheat using an air fryer, preheat it to 375 degrees Fahrenheit and cook for about 4 minutes, flipping once halfway through.