1. In a large mixing bowl, combine olive oil, lemon juice, cumin, coriander, paprika, turmeric, cinnamon, black pepper, salt, and minced garlic.
2. Add the chicken thighs to the bowl and coat them well with the marinade. Cover and refrigerate for at least 1 hour, or overnight for best results.
3. Preheat your oven to 425°F (220°C).
4. Place the marinated chicken on a baking sheet and bake for 25-30 minutes, or until fully cooked and slightly charred on the edges.
5. Let the chicken rest for a few minutes before slicing it thinly.
6. Serve the chicken shawarma with pita bread, fresh vegetables, and your favorite sauces.