Here is South Carolina/Georgia we have a lot of "Mexican" restaurants that have Central America dishes and the food favored in Eastern Mexico, like tamales wrapped in banana leaves. A few places serve frozen entrees made in Atlanta, passable, but not great. They have to sell what people will buy so there is that.
The key is going there on a working day and if a lot of hard working brown guys eat there it's a good place to try.
OTOH, the Central American crew that did our roof all wanted Colonel Sanders chicken two days in a row.
Funny thing, we hadn't had the Colonel's chicken in many years, it was quite good. Not something I'd like often, but it wasn't bad.