In a mixing bowl, mix mayo, cheese, garlic, celery salt, Italian seasoning, garlic powder, black pepper, cayenne pepper, half & half, Greek yogurt thoroughly into a uniform mixture.
Coat each piece of chicken completely with the mixture and place into a baking dish.
Sprinkle panko to cover the top of the chicken pieces in the baking dish.
Bake in oven at 400 degrees F for 45-60 minutes until chicken internal temperature is at least 165 deg F.