Preheat the oven to 425 degrees F.
Dust chops with the five-spice powder and salt and pepper, to taste. Heat the oil in an oven proof skillet over medium-high heat. Fry the chops for 2 minutes on each side. Put the pan with the chops into the oven and roast until cooked through, about 10 to 12 minutes. Remove the chops to a plate, cover, and keep warm. Stir the flour into the drippings in the pan. Pour in the Merlot and add the orange zest and beef stock. Put the pan onto medium-high heat and cook until slightly thickened. Taste and adjust seasoning with salt and pepper.