Is it normal to eat chips and have a sore tongue?

It doesn't happen all the time but when I eat some chips my tongue gets sore afterwards. It's not burning, itchy, blistering, flaky, bloody whatsoever. My tongue just gets sore in some certain spots. When I just ate lays chips it got sore in the back etc. It's one certain spot and when I put pressure on it, it gets even more tender. It goes away after 10-30 minutes. I don't think it's an allergic. I'm thinking because of the excessive salt but I don't know...