Marinate hens in lemon juice, olive oil, herbs, salt and pepper for one hour.
Bring them to room temperature and preheat your grill to medium high. Pat the hens dry. Oil the hot grill and place hens skin side down to mark for 5-7 minutes. Turn hens over, reduce heat to medium and continue to grill until juices run clear, about 25-30 minutes.
Allow hens to rest for 10 minutes before plating. Serve with lightly dressed romaine salad and roasted vegetables.