In a large bowl season pork chops with ketchup, Worcestershire, oregano, black pepper, seasoning salt, salt, garlic and paprika. Mix well to coat.
Preheat oven to 325 degrees.
Place pork chops in a 13x9 baking pan in one layer and cover with aluminum foil. Place in preheated oven and bake for 35 minutes.
Turn the oven up to 350 degrees and uncover the pork chops. Top with sliced onion and peppers and bake for an additional 30 minutes or until the pork chops are golden brown.