Pound chops to 1/4-inch thickness. Sprinkle both sides of chops with pepper. Heat half the oil in large skillet on medium heat. Add 3 chops; cook 3 min. or until done (145º F), turning after 1-1/2 min. Remove from skillet; cover to keep warm. Repeat with remaining oil and chops.
Return chops to skillet; add barbecue sauce. Cook 2 min. or until chops are completely covered with sauce and sauce is heated through.
Fill rolls with chops and remaining ingredients.