Dice up chicken into cubes. For faster cooking, place chicken by itself in a fry pan and cook until juices run clear. Spray avocado oil in a 9x13 casserole dish and place cooked chicken. Add Italian seasoning and spices and mix well. Sprinkle parmesan cheese and pats of butter on top and bake in a 400 degree oven for 5 minutes or until cheese is crispy.