01 - Whisk together tahini, olive oil, lemon juice, zaatar, garlic, cumin, smoked paprika, salt, and pepper in a large bowl until smooth and well combined.
02 - Pat chicken thighs dry with paper towels. Add chicken to the marinade, turning to coat thoroughly. Cover and refrigerate for at least 1 hour, up to 8 hours for deeper flavor.
03 - Preheat oven to 400°F. Line a baking sheet with parchment paper or foil for easy cleanup.
04 - Arrange marinated chicken thighs skin side up on the prepared baking sheet. Spoon any remaining marinade over the top.
05 - Roast for 30–35 minutes until the skin is golden and lightly crisped, and the internal temperature reaches 175°F.
06 - For extra crispiness, broil on high for 2 minutes at the end of cooking time.
07 - Remove from oven and let rest for 5 minutes. Garnish with fresh parsley and toasted sesame seeds. Serve with lemon wedges.