In a medium bowl, whisk together 1/4 cup brown sugar, 1/2 cup soy sauce, 1/4 cup rice wine vinegar, 1/4 cup honey, 2 tsp minced garlic, 1/2 tsp ground ginger, and 1/2 tsp pepper.
Reserve approximately 1/2 cup of the marinade. Place the 6 bone-in pork chops in a large bowl or bag and pour the remaining marinade over the pork chops.
Marinate the 6 bone-in pork chops for at least 30 minutes or up to 8 hours.
Remove the 6 bone-in pork chops from the refrigerator 20 minutes before cooking.
Heat the grill over medium high heat to at least 400 degrees F and rub the grill gates with oil so that the pork chops do not stick while grilling.
Place the 6 bone-in pork chops on the grill and cook for 5 to 6 minutes per side, depending on the thickness, until the pork reaches an internal temperature of 145 degrees F. If the pork chops are browning too quickly because of the sugar in the marinade, reduce the grill temperature.
Move the pork chops to a plate and let them rest for 3-5 minutes before serving.
While the pork chops are cooking, whisk 1 Tbsp cornstarch into the reserved 1/2 cup marinade. Heat the mixture in a saucepan over medium-high heat, whisking constantly, until the sauce has thickened.
Brush this sauce over the grilled pork chops when serving and enjoy!
Garnish with green onions and sesame seeds.