Marinate the chicken: In a large bowl, combine the lemon juice, olive oil, sea salt, ground cumin, paprika, turmeric, ground cinnamon, and red pepper flakes. Whisk together until well blended. Add the chicken thighs and toss until evenly coated. Cover and refrigerate for at least 30 minutes or up to 12 hours for maximum flavor.
Preheat your oven to 400 degrees F (200 degrees C). This ensures that your casserole will bake evenly and develop a beautiful color.
Remove the marinated chicken from the refrigerator, shaking off any excess marinade. Place it on a plate while you prepare the rest of the casserole.
In the same bowl with the leftover marinade, add the chopped zucchini, Arborio rice, chicken stock, and half of the chopped parsley or mint. Carefully fold the ingredients together, ensuring everything is well mixed.
Transfer the mixture to a 15-inch oven-proof skillet or a 9 x 13 casserole dish. Spread the mixture in an even layer, making sure the rice and vegetables are evenly distributed.
Nestle the marinated chicken thighs in the rice mixture. This allows the chicken to infuse its flavor into the rice as it cooks.
Place the casserole in the preheated oven and bake for 45 minutes, or until the rice is tender and most of the liquid has been absorbed. The chicken should be cooked through and slightly golden on the outside.
After baking, remove the casserole from the oven and allow it to rest for 5 minutes. This helps the flavors settle and makes it easier to serve.
While the casserole is resting, prepare your topping. In a bowl, toss the chopped cucumbers and tomatoes with a drizzle of olive oil and a sprinkle of salt. You can also add a splash of lemon juice if you like.
Optional: If you prefer to serve the chicken in a more traditional shawarma style, remove it from the casserole, thinly slice it, and then return it to the pan.
Finally, scatter the cucumber-tomato topping over the casserole and serve alongside your favorite white sauce and hot sauce. Enjoy!