In-N-Out's are always packed, staffed with cheerful english speaking, clean cut kids, very simple menu, good food prepared where you can watch it being handled, what's not to like?
My son worked at In-and-Out when he returned from his deployment in Iraq/Kuwait. Eventually, he moved to real estate sales. We don't have an In-and-Out in Pocatello. It might be hard to get a store going because of the way the family that owns the chain handles new stores.
I forgot to mention the Italian/buffet at Craigo's Gourmet Pizza, Blimpie subs, Papa Murphy's pizza, the Mystique dinner, theater, Senang wine bar & restaurant, Roberto's mexican (same chain as San Diego), Bajio and many more. Lots of pizza joints and bars with food service.