OK, so it's a chain, but Fish City has its roots in Dallas (originally called Shell's Oyster Bar) and it hasn't expanded past Oklahoma or Louisiana, keeping it unique enough to make our list. But even if Fish City were to expand to McDonald's-like proportions, there's no denying the mind-blowing goodness of the oyster nacho. We know, it doesn't sound good, but there's something entirely unexpected, yet delightful, about these nachos. It's tortilla chips topped with fried oysters, pico de gallo and chipotle tartar sauce. It's truly Texan and truly delicious.