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