Mix the marinade:
Combine Dijon mustard, brown sugar, apple cider vinegar, Worcestershire sauce, garlic powder, onion powder, and salt in a small bowl, stirring until fully blended. Reserve 4 to 6 tablespoons of this mixture for later basting.Marinate pork chops:
Apply the remaining marinade to the pork chops, ensuring even coverage. Refrigerate for 1 to 2 hours to marinate.Preheat grill to 400°F:
Preheat the grill to 400°F (205°C).Grill first side:
Place pork chops on the grill over direct heat, close the lid, and cook for 4 minutes.Flip and baste:
Flip the chops, baste with reserved marinade, close the lid, and cook another 4 minutes.Baste and cook:
Flip again, baste with more reserved marinade, close the lid, and cook for 1 minute.Sear and rest:
Flip once more to sear the freshly basted side for 1 minute. Remove from grill and let rest for at least 5 minutes, tented with foil if desired.