Add all ingredients to a small saucepan. Whisk to combine and set aside while you heat the grill.
Heat the grill to medium high, about 400° F. Grill the pork chops for about 5 minutes, then flip and cook an additional 5 minutes, until a thermometer inserted reads 140-145° F. Remove chops from the grill to a platter and cover loosely with foil to rest for about 10 minutes.
While the pork chops rest, lightly brush the apple slices with olive oil. Place the apples on one side of the grill and grill about 2 minutes per side, until softened. On the other side of the grill, place the saucepan with the sauce. Whisk until thickened, about 8 to 10 minutes.
Serve the pork chops with sauce spooned over them and apples on the side.