Mix honey, soy sauce, crushed red pepper flakes, and black pepper in a bowl. Pour about 2 tablespoons of the honey-soy mixture into a small bowl and save for later. Brush chops with olive oil on both sides, and sprinkle with salt and black pepper.
Place the pork chops on a grilling pan on high heat until lightly charred and crusty, 4 to 5 minutes per side.  Lower the heat to medium and continue to cook, brushing both sides generously with the honey-soy glaze, until chops are no longer pink inside, about 3 to 4 more minutes.
While chops are grilling, brush slices of onion with oil, and sprinkle with salt and black pepper. Grill onion slices until they are translucent and browned, 3 to 4 minutes per side. To serve, place chops and onions on warmed plates, and brush the chops with the reserved honey-soy glaze.