Sprinkle pork chops with salt and pepper. In a skillet, brown chops in oil for 3 minutes on each side. In a small bowl, combine the preserves, vinegar and mustard. Spoon half of the mixture over pork. Reduce heat; cover and simmer for 3 minutes. Turn chops; top with remaining preserves mixture. Cover and simmer 4-5 minutes longer or until meat is no longer pink.