Follow these simple steps to create your Shawarma Chicken in the Oven:

1. Prepare the Marinade: In a large bowl, combine olive oil, minced garlic, ground cumin, ground coriander, paprika, turmeric, cinnamon, cayenne pepper, salt, black pepper, and lemon juice.
2. Marinate the Chicken: Add the chicken thighs to the bowl, ensuring they are well coated with the marinade. Cover and refrigerate for at least 1 hour (or overnight for best results).
3. Preheat the Oven: Preheat your oven to 400°F (200°C).
4. Prepare a Baking Sheet: Line a baking sheet with parchment paper or lightly grease it with cooking spray.
5. Arrange the Chicken: Place the marinated chicken thighs on the prepared baking sheet, ensuring they are spaced evenly.
6. Bake: Place the baking sheet in the preheated oven and bake for 30-35 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (74°C).
7. Broil for Crispiness: For extra crispiness, switch to the broiler for the last 2-3 minutes of cooking, watching closely to avoid burning.
8. Rest the Chicken: Remove the chicken from the oven and allow it to rest for 5-10 minutes before slicing.
9. Slice and Serve: Slice the chicken into strips and serve with your choice of sides or in wraps.

These straightforward steps will lead you to a flavorful meal that captures the essence of authentic shawarma.