Preheat oven to 400°F.
Sprinkle pork chops with salt and pepper. Heat 2 teaspoons oil in a large ovenproof skillet over high heat. Add the pork chops and cook until beginning to brown, 1 to 2 minutes per side. Transfer to a plate.
Add the remaining 1 teaspoon oil to the pan. Add onion and cook, stirring, until softened, 3 to 4 minutes. Stir in garlic and cook, stirring, until fragrant, 30 seconds. Add orange juice and cook until most of the liquid has evaporated, 30 seconds to 1 minute. Stir in barbecue sauce. Return the pork chops to the pan, turning several times to coat with the sauce.
Transfer the pan to the oven and bake until the pork chops are barely pink in the middle and an instant-read thermometer registers 145°F, 6 to 10 minutes. Serve the sauce over the pork chops.
Check the sodium content of your favorite barbecue sauce if you have sodium sensitivity¿some can be quite high. This recipe was developed with Annie's Natural Hot Chipotle BBQ Sauce, which has only 240 mg sodium per 2-tablespoon serving.