In a bowl, mix together the orange zest, juice, vinegar, and honey. Season with salt and pepper. Place pork chops, rosemary sprigs, and orange wedges into a shallow dish or plastic zipper bag with the marinade, tossing to coat. Refrigerate at least 2 hours.
Place a wire rack on a foil-lined baking sheet. Turn on broiler. Remove pork, orange wedges, and rosemary from marinade. Transfer the pork and oranges to the wire rack and season with salt and pepper. Transfer the marinade to a small saucepan. Simmer over medium heat until reduced, about 5 minutes.
Broil pork and oranges 4 minutes, then flip, brush with reduced marinade, and add rosemary to the pan. Broil another 5-7 minutes until chops are caramelized and charred and pork is cooked (at least 145 degrees for slightly pink, 160 for well done). Brush with more marinade and allow the pork to rest at least 3 minutes before serving. Serve with charred oranges and rosemary and remaining marinade on the side.