Creating Chicken Shawarma with Yogurt Sauce is simple and straightforward. Just follow these steps:

1. Prepare the Marinade: In a large bowl, combine olive oil, cumin, paprika, turmeric, coriander, cinnamon, minced garlic, lemon juice, salt, and pepper. Mix well until you have a smooth marinade.

2. Marinate the Chicken: Add the chicken thighs to the marinade, ensuring they are well-coated. Cover the bowl and refrigerate for at least 1 hour or overnight for maximum flavor.

3. Cook the Chicken: Preheat a grill or skillet over medium-high heat. Remove the chicken from the marinade and cook for about 5-7 minutes on each side, or until fully cooked and browned.

4. Rest the Chicken: Once cooked, remove the chicken from the heat and let it rest for a few minutes. This helps retain the juices and flavor.

5. Prepare the Yogurt Sauce: In a separate bowl, mix the Greek yogurt, tahini (if using), lemon juice, minced garlic, and a pinch of salt. Adjust seasoning according to taste.

6. Slice the Chicken: Thinly slice the rested chicken into strips.

7. Assemble the Shawarma: Take a pita bread and layer the sliced chicken, lettuce, cucumber, tomato, and red onion. Drizzle generously with the yogurt sauce and roll it up tightly.