In a Ziploc bag, combine the milk, pickle juice, and egg.
Place the chicken inside the bag, seal, and let this marinade at least 4 hours or overnight. Be sure to place it inside another bowl or pan in case it leaks.
Once you are ready to cook the chicken, combine the flour, salt, paprika, and ground pepper in another Ziploc Bag.
Take the chicken out of the marinade, letting the excess marinade drip off it and then place it inside the bag with the flour mixture.
Seal and shake the bag so that all the chicken is well coated with the mixture.
Place the chicken in the pan of the Air Fryer and spray with a good coat of oil.
Cook for 10 minutes on 390* or the appropriate temperature for chicken on your Air Fryer.
Carefully open and flip the chicken and spray with another coat of spray.
Continue cooking for an additional 10 minutes or until fully cooked.