Usually, the person’s last name is used for the restaurant’s name, but some choose their first name or just part of the name.
As many of you may already know, NOBU, the world-famous Japanese restaurant, is also named after its owner, Mr. NOBUYUKI MATSUHISA.
It is one option to use the name of the owner or head chef if they have a distinct personality that has already attracted customers. It does not matter whether the name is Japanese or not.
Yet, if the person leaves the restaurant, only the name is left behind, so you may want to consider that risk.