Heat a large saute pan, lightly coated with evoo, over medium heat. Pat dry chicken and season with salt and pepper.
Place chicken skin side in pan and lightly brown for 5 minutes. Push chicken aside and add onion. Continue cooking for 5 minutes more until onion has softened. Add garlic, tomatoes, za’atar and lemon. Cook for 2 minutes until garlic has softened slightly.
Add chicken broth and tahini. Stir together to form a creamy sauce.
Partially cover and cook either stovetop or in the oven at 350°F for 30 minutes or until chicken is cooked through.
Transfer chicken to a platter. Pour sauce over chicken and garnish with parsley, za'atar, and sesame seeds. Serve alongside Spicy Roasted Eggplant.