Cast-Iron Pork Chops with Cacao-Spiced Rub

2 tablespoons cumin seeds, toasted and ground, or 2 tablespoons ground cumin
2 tablespoons chili powder
1 tablespoon paprika
2 teaspoons dried oregano
2 teaspoons cacao powder (no sugar)
1 teaspoon cinnamon
1 teaspoon freshly ground black pepper
Two 2-inch-thick bone-in pork chops (about 1¼ pounds)
Coarse sea salt (about 2 tablespoons or as needed)
1 tablespoon avocado oil
2 tablespoons unsalted butter

Directions

1. MAKE THE RUB: Combine the ground cumin seeds, chili powder, paprika, oregano and cacao. Add the cinnamon and cracked pepper, and stir until the mixture is well combined. Set aside.
2. Preheat the oven to 450°F. Remove the pork chops from the fridge and set on a plate. Liberally salt the meat on each side and into the fat bits. Rub the spice mixture all over the meat. Allow to rest at room temperature for 45 minutes.
3. In a large cast-iron or other ovenproof skillet over medium-high heat, heat the oil until it is shimmering.
4. Place the seasoned chops in the skillet and brown for about 2 minutes on each side.
5. Transfer the skillet to the oven and roast the chops until just cooked through, 10 to 12 minutes.
6. Remove the skillet from the oven and carefully drain any excess oil into a bowl to be discarded once cooled.
7. With the pork chops still in the skillet, evenly add the butter on top of the meat. It should melt from the heat of the pan and the chops. Baste the chops with the melted butter and pan juices, then leave the pork to rest for at least 10 minutes, flipping once.
8. Cut the pork from the bones, slice and sprinkle with sea salt.