Mix pineapple, ketchup, vinegar, brown sugar, soy sauce, and Worcestershire sauce in a bowl.
Season the pork chops with salt and pepper. Put the flour in a plastic bag. Put the chops one by one into the bag and shake to thoroughly coat the chops.
In a large skillet, heat oil at medium-high heat. Add pork chops and brown chops for two minutes on each side.
Pour mixture over the pork chops. Cover and cook at low heat for 8 minutes or until pork chops are slightly pink inside. If the sauce is too thick, add a little bit of water.