Add the chicken to a large resealable freezer bag and top with the lemon juice, garlic, lemon pepper seasoning, and cayenne pepper.
Squish to combine, remove excess air, and seal. Freeze.
Thaw.
Preheat the oven to 350° and grease a large casserole dish with nonstick cooking spray.
Thaw.
Thaw.
Thaw. Add contents of bag to a slow cooker. Cook on low for 3-4 hours.
Preheat Air Fryer to 380° for 5 minutes. Cook for 20 minutes at 380° turning once or until chicken is 165° internally.