I'll save you a trip to an allergy specialist...doctor's best advice will be:
"don't go rushing to the store to buy more anytime soon."
They won't know, allergy tests are unlikely to pin point what it was, and may only send you on your way with an EpiPen prescription when a good dose of Bendryl will work as well.

I have a bunch of weird food allergies that can result in an anaphylactic reaction, I avoid those foods or the allergies have resolved on their own. Pork Rinds are pretty easy to avoid.

One thought though...what about the oil it was fried in? Probably not if you have eaten other fried foods in the past without reaction. Evans foods doesn't list what oil on their website.