Toss together first 6 ingredients in a 15- x 10-inch jellyroll pan.
Bake at 400° for 20 minutes. Add onion and next 3 ingredients, and bake, stirring occasionally, 15 more minutes. Keep warm.
Stir together flour, thyme, and Cajun seasoning in a shallow bowl. Dredge pork chops in flour mixture.
Fry pork chops in hot vegetable oil in a large heavy skillet over medium heat 3 minutes on each side or until done. Serve pork chops with roasted vegetables.