If you read my recipe you will know how to make tandoori masala easily. However, the method we use to prepare tandoori chicken is to first prepare the spice powder, to which we add red pepper, ginger-garlic paste, salt, amchoor, and a few spices separately. Then we marinate it by coating it with chicken.
However, in the case of Nawab’s tandoori spices, you do not have to make any spices separately. It has everything you need. Now your personal opinion is whether you can make this spice at home or buy ready-made chicken tandoori masala for cooking.