In a small bowl, combine the parsley, marjoram, sage, garlic powder, salt and pepper. Brush both sides of pork chops with 1 teaspoon oil; rub with herb mixture., In a large nonstick skillet coated with cooking spray, cook chops in remaining oil over medium heat for 3-4 minutes on each side or until lightly browned. Remove and keep warm. Add broth and sherry or additional broth to skillet, stirring to loosen browned bits. Bring to a boil. , Return chops to the pan. Reduce heat; cover and simmer for 4-5 minutes or until a thermometer reads 160°. Serve chops with pan juices.