As far as Indian foods go, there are not many options in Pompeii. However vegetarian and vegan food is easily available in the city. Machiavelli restaurant e lounge is vegetarian friendly, and also has gluten free options. It is to be noted that most restaurants will have the vegetarian or margherita pizza option which is vegetarian and will also serve the vegetarian/plain cheese pasta. A vegetarian dish to try while in Pompeii is the Parmigiana di Melenzane.