Not sure what you mean or expect by chicken naan. Nan (or naan) is a type of indian bread.
Presumably you want some form of chicken curry to go with a nan bread.
Would need some more information to help you
what you need to do is this, make the nan as normal, then make the chicken filling, then roll the nan so that it is twice as large as needed, then add the filling to the middle then fold the nan over the top.
Then stick in your Tandoor, you have got a Tandoori oven haven't you?