Marinate the Chicken Cut small slits in the chicken thighs and set aside. In a large bowl, mix extra virgin olive oil, minced garlic, lemon juice, zaatar, and salt. Coat the chicken thoroughly with the marinade. Cover and refrigerate for at least 1 hour, up to 6 hours.
Grill the Chicken Preheat the grill to 400°F and clean the grates. Grease the grates with a paper towel dipped in oil using tongs. Place the chicken thighs on the grates and grill for about 6 minutes. Flip and grill for another 6 minutes until fully cooked.