In a large resealable bag, combine lemon juice, oil, garlic, salt, oregano, and pepper. Place chops in bag, seal, and refrigerate 2 hours or overnight. Turn bag frequently to distribute marinade.
Preheat an outdoor grill for high heat. Remove chops from bag, and transfer remaining marinade to a saucepan. Bring marinade to a boil, remove from heat, and set aside.
Lightly oil the grill grate. Grill pork chops for 5 to 7 minutes per side, basting frequently with boiled marinade, until done.
