Rinse the chicken well with salt and flour, then rinse again with water and let it drain thoroughly.

Cut the chicken into medium-sized pieces and place them in a bowl.

Add the garlic, mustard, vinegar, salt, pepper, mixed spices, and oil to the chicken. Mix well and let the mixture marinate for 10 minutes.

Cut the tomatoes, bell peppers, and onion into medium pieces.

Thread the marinated chicken pieces, tomatoes, onion, and bell peppers onto wooden skewers as desired.

Arrange the skewers on a greased baking sheet and bake in the oven until cooked through.

Remove the baking sheet from the oven, place the shish tawook skewers on a large serving platter, garnish with chopped parsley, and serve hot.