Pour the milk into a large bowl and add the Air Fryer mix. Then add the chicken pieces and stir to coat them thoroughly. Cover with plastic wrap and refrigerate for at least 2 hours.
Place the chicken pieces on paper towels to remove any excess moisture.
Prepare three bowls: one with flour, a second with egg whites lightly beaten with a fork, and a third filled with fine breadcrumbs.
Coat the chicken pieces in flour, then in egg white, and finally in breadcrumbs.
Place the nuggets on the Air Fryer rack, then lightly brush them with oil. Cook for 10 minutes. Flip the nuggets and continue cooking for 2 more minutes until they’re nice and crispy.
