Season the chops: Pat pork chops dry.
Mix salt, pepper, paprika, onion powder, and garlic powder. Rub evenly over both sides.
Sear for flavor (optional but worth it): Heat olive oil in a skillet over medium-high. Sear chops 2–3 minutes per side until golden.
Transfer to the slow cooker.
Build the sauce base: In the same skillet, lower heat to medium. Add 2 tablespoons butter and the minced garlic. Cook 30–60 seconds until fragrant, not browned.
Deglaze: Pour in chicken broth, scraping up brown bits.
Stir in Dijon, Worcestershire, thyme, and rosemary. Simmer 1 minute.
Slow cook: Pour the sauce over the pork chops in the slow cooker. Cover and cook on Low for 4–6 hours or High for 2–3 hours, until the chops are fork-tender.
Finish the sauce: Remove chops to a plate.
Whisk in heavy cream, remaining 2 tablespoons butter, and lemon juice. Cover and cook on High for 10–15 minutes to thicken slightly. If you want it thicker, whisk in a pinch of xanthan gum (about 1/8 teaspoon) and stir well.
Taste and adjust: Add salt and pepper if needed.
Return pork chops to the slow cooker to warm through for a few minutes.
Serve: Spoon the garlic butter sauce over the chops. Garnish with parsley.