Guys is still open in the same location (since the 70s), but ownership has changed. Guys has a food truck that travels around, I know it comes to Carrollton.

Closer to Starkville is Wades (in Tomnolen), I haven't eaten there, but it gets good reviews.

There is a Cock of the Walk in a gas station in Louisville that has the best chicken tenders on planet earth, never had fish there but i expect it'd be good.

In these days of labor and supply chain issues, call first before you make any long drive.