Ahh, yeah, job seeking can be tough, especially in terms of finding the right fit. Sorry to hear about that stuff with Whataburger, that sounds pretty messed up! Like, yeah, why is it any of their business? I don't think I've ever heard of an application that asks you to identify your ethnicity. Hope you can find something that works for you, anyhow.
I experience social anxiety, so I hear you there: it makes everything just that much more difficult. Still, best of luck to you!