In a bowl, mix together shallots, brown sugar, fish sauce, rice vinegar & black pepper.

Using a meat piercer, poke holes all around the pork chops.

Put the pork chops in a container. Pour the marinade over the pork chops. Let the pork chops-marinade sit in the kitchen counter for 30 minutes or you can place it in the refrigerator for overnight marinade.

Remove pork chops from the marinade. Keep the marinade.

In a wok, heat oil over medium-high heat.

Add pork chops and pan fry for 4 minutes on each side.

Place cooked pork chops on a serving plate. Let it rest for 7 minutes prior to serving.

In a saucepan, bring the marinade to a boil. Cook until sauce is reduced around 3-5 minutes.

Serve the sauce on the side with calamansi. Enjoy!