Heat 1 tablespoon oil in a medium skillet over medium heat. Add onion, bell pepper, and rosemary; season generously with salt and pepper. Cook, stirring frequently, until onion is golden brown, 6 to 8 minutes.
In a small bowl, whisk together broth and tomato paste. Pour mixture into skillet; stir in beans. Simmer, stirring occasionally, until beans are coated evenly and sauce is thickened, 10 to 15 minutes.
Meanwhile, generously season both sides of pork chops with salt and pepper. Heat remaining 2 tablespoons oil in a large skillet over medium-high heat. Cook pork (in 2 batches, if necessary) until just cooked through, 2 to 3 minutes per side. Serve on top of bean mixture.
Pork rib chops have a bit more marbling than loin chops, so they tend to be juicier and more tender once cooked.