We seldom do fast food, but when we do it’s either CFA (preferred) or In-and-Out
I also just learned “Cookout” fast food restaurants, which look to be mostly in GA and Carolinas are also Christian-owned/oriented
There is a Cookout here in Lexington, KY. Usually it is full of University of Kentucky students because they have the lowest prices of any fast food chain in town. And yes, they do play Christian music (from a Sirius XM station), but the students are so loud I have to go in the bathroom to hear it.