Take out your leftover nuggets from the fridge and put them in the air fryer basket in a single layer. Make sure they are not overlapping or stacked on top of each other.

Put the basket in the air fryer and turn on the "air fryer" mode. Set the temperature at 375-400 degrees F. The amount of time needed will depend on how many nuggets you are heating. Start with 3 minutes, check, and continue with 2-minute intervals if it needs more. You will know they are done when the outer layer has darkened to a golden brown color and the oil is sizzling, or by using a food thermometer and seeing the internal temperature at 165 degrees F. Make sure you are close by and watching. The nuggets have a fairly thin shell so they can burn easily if you're not careful.

Once they are done, pour them onto a plate with a paper towel to remove the excess oil and to cool for a minute. Serve with leftover sauce or make a fresh one and enjoy!