In a gallon freezer bag, combine avocado oil, Onion Onion seasoning, Garlic Garlic seasoning and black pepper. Add pork chops. Seal well and refrigerate 2-3 hours or up to overnight.
Sprinkle Ultimate Steak Seasoning on both sides of marinated pork chops before grilling.
Preheat the outdoor grill and place chops on the grill. Cook for 5-7 minutes per side or until the meat thermometer inserted into the chop reads 145 degrees F (63 degrees C). Let the pork chops rest for several minutes before serving.