Mix all the spices with the yogurt, minced garlic, and 1 tablespoon of vinegar. Stir well.

Add the chicken breast strips to the yogurt mixture and let them marinate for at least 2 hours.

Heat vegetable oil in a skillet. Once hot, add the chicken over high heat so it doesn't release its juices. When the color changes, lower the heat and let it cook through. Near the end of cooking, add the sliced onion and bell pepper, and stir for a couple of minutes. The shawarma is now ready.

Take the Syrian flatbread and fold it in half. Add a suitable amount of chicken, ketchup, garlic sauce, and mixed cheese or mayonnaise. Fold the sides in like a cannelloni.

Place the sandwich on a grill, sandwich maker, or in a skillet lightly greased with a little oil. Toast until golden. Enjoy!