Stir cold water, kosher salt, and sugar in a large bowl until fully dissolved. Submerge pork chops. Brine 30 min for standard 1-inch boneless, 45 min for 1.5-inch bone-in, or 15 min for thin 3/4-inch cuts. Room temperature is fine for a 30-min brine.
Set air fryer to 400F and preheat for 5 full minutes. Do not skip - a cold-start air fryer steams instead of sears.
Remove chops from brine. Pat completely dry on all sides with paper towels. Coat lightly with oil. Mix rub ingredients and press firmly onto all surfaces. Let rest 5 minutes.
Place chops in a single layer in the basket with at least a half-inch gap between each. Air fry at 400F for the first half of total cook time (5-6 min for standard 1-inch boneless).
Flip chops with tongs. Continue for remaining cook time. If using glaze: brush on in the final 2 minutes only.
Insert instant-read thermometer into the thickest part (avoid bone). Pull chops at 140F internal temperature.
Transfer to a plate, cover loosely with foil, and rest 5 full minutes. Temperature rises to USDA-safe 145F during rest. Serve immediately.