Brine Pork Chops: Mix brine in a loaf-sized dish by stirring water with salt until salt dissolves. Add chops in single layer (brine should cover chops). Refrigerate 1-2 hours. Remove chops; lightly blot with a paper towel.

Make Spice Mix: Stir brown sugar, paprika, salt, pepper and onion powder in a small bowl until combined. Season BOTH sides of the brined pork chops with spice mixture, pressing it into the meat to adhere.

Cook: Plug in the Instant Pot; press SAUTÉ button (High heat). Add butter. Once melted, add pork chops in a single layer. Lightly brown chops on both sides (1-2 minutes per side). Remove pork chops from Instant Pot; set them aside on a plate.

Keep Instant Pot on SAUTÉ. Add chicken broth; stir with wooden spoon, scraping up browned bits left in the pot (from browning pork chops). Add Worcestershire sauce and Liquid Smoke; stir to combine. Press CANCEL button. Add pork chops back into the sauce in a single layer.

Place lid on the Instant Pot; lock into place. Flip pressure valve to SEALING. Program Instant Pot to cook on MANUAL (High Pressure) for 7 minutes. It will take 7-10 minutes to reach full pressure before the cooking program timer begins. When done, let the pressure release NATURALLY for 12 minutes (do nothing), then perform a quick release of any remaining steam by flipping the pressure release knob to VENTING. When ALL steam has been released (and pressure gauge button drops down), it's safe to open the lid. Unlock/remove lid. Let pork chops rest 5 minutes before removing them (to redistribute internal juices in the meat).

Transfer pork chops to individual plates. Drizzle some of the remaining sauce in the pot over the meat, if desired. Serve and enjoy!