In a shallow bowl, mix 1/4 cup flour, mustard, garlic pepper and seasoned salt. Add pork chops, 1 at a time, and toss to coat; shake off excess. , Select saute or browning setting on a 6-qt. electric pressure cooker. Adjust for medium heat; add oil. When oil is hot, brown pork in batches. Add 1-1/2 cups broth to pressure cooker. Cook 30 seconds, stirring to loosen browned bits. Press cancel. Return all pork to pressure cooker., Lock lid; close pressure-release valve. Adjust to pressure-cook on high for 3 minutes. Quick-release pressure. A thermometer inserted in pork should read at least 145°. Remove pork to a serving plate and keep warm., In a small bowl, mix remaining 1/4 cup flour and 1/4 cup broth until smooth; stir into pressure cooker. Select saute setting and adjust for low heat. Simmer, stirring constantly, until thickened, 1-2 minutes. Serve with pork.