Most restaurant websites don't have photos of the food. Certainly not professional ones. Pan around randomly on google maps then zoom in and find the nearest strip mall, then go down the line checking the websites of restaurants there. Most are generic crap and you'll be lucky if the menu online is even complete. If they have food photos it's probably smartphone pictures taken by the owner's kid.

I do this a lot, far more than I actually go to restaurants, because I like adding small business details to OSM. There are a few that have their shit together but the overwhelming majority do not.