Pounding the pork chops trims the time on the grill and ensures even cooking.
Preheat grill to 350° to 400° (medium-high) heat. Place pork chops between 2 sheets of heavy-duty plastic wrap; flatten to 1/2-inch thickness using a rolling pin or flat side of a meat mallet.
Stir together brown sugar and Cajun seasoning; rub mixture over pork chops. Grill pork chops, covered with grill lid, 4 minutes on each side or until done. Season with salt to taste.