Your life will be 1,000 times easier if you open up and try some new foods. And your health will be better for the rest of your life, too. It sounds like your identity is a bit wrapped up in this unwillingness to try new foods. I’d agree that a counselor at the student health center isn’t a bad idea.
Here is a bonus about being in college. You can try food, and if you really don’t like it, you can throw it out. And there is no mom or spouse who will get mad that they cooked it and you aren’t eating it. Think of college as a place where you learn new stuff, and learning new foods is part of that. They also probably have a wide variety of food, which makes it easier to try things.
I grew up eating a pretty bland diet – smallish Midwestern town, and that is what my mom cooked and my dad liked. I remember an incident when I was a senior in HS when I was away from home, super hungry, and ended up eating last at a picnic with sandwich fixings as the main item. And the turkey was GONE! And there was no mayo. And only whole grain bread. And no American cheese! But I was starved, and knew there would be no food for about 6 more hours. So I put together a sandwich of things I’d never had before – and was completely surprised when it was delicious. It was kind of a food turning point for me. I realized that I’d been scared to try things that we’re unfamiliar – but that some of them were good, and I’d been pretty sheltered from lots of different kinds of food.
Try taking some of at least one new thing at each meal. Eat at least 3 bites of it. Think of this year with food service as an opportunity to try a wide variety of new things to find more that you like, instead of as a trial.