i don't think it would be a profitable business unless you are a stay at home wife and want to do something with your time.
you need to look at the logistics here to see if it is a feasible business without losing money.
how many Nepalese people live around your area where you can deliver.
how limited you want your menu to be so that you can limit your waste on food and speed up the delivery.
you need to go though all these different questions.