DO-AHEAD TIP: Marinate chicken overnight or for at least 4 hours (see recipe).
Season chicken evenly with salt, pepper, thyme, rosemary, and parsley flakes then place in a large zipper-topped plastic bag.
Drizzle with lemon juice and olive oil then seal bag and refrigerate overnight or for at least 4 hours.
Preheat outdoor grill to MEDIUM-HIGH.
Remove chicken from marinade, discarding marinade and bag; grill for 4 to 7 minutes per side or until cooked through.