Prep the pork: Pat pork chops dry with paper towels. Season both sides generously with salt and pepper.
Sear the meat: Heat olive oil in a skillet over medium-high heat. Sear pork chops 2-3 minutes per side until golden brown. Transfer to a plate.
Layer the slow cooker: Place sliced onions on the bottom of the slow cooker. Arrange seared pork chops on top.
Make the sauce: In a bowl, whisk together chicken broth, heavy cream, Dijon mustard, thyme, rosemary, and paprika. Pour mixture over the pork chops.
Cook on low: Cover and cook on LOW for 5-6 hours until pork reaches 145°F internal temperature and is tender.
Optional thickening: For a thicker sauce, mix 2 tablespoons cornstarch with 3 tablespoons cold water. Stir into the sauce and simmer 1-2 minutes.
Serve: Plate pork chops, spoon sauce over top, and garnish with fresh thyme sprigs. Serve with egg noodles, mashed potatoes, or rice.