I'm very non-picky, I just plain love to eat food. And I'm always open to trying more new ones.
But things I don't like:
Sour cream/bleu cheese/Ranch dressing
Processed, packaged-by-slice, American cheese, like Kraft Singles. Makes me literally gag.
Brussels sprouts, though I love most vegetables. Celery needs to be cooked.
Oatmeal, purely for the texture. But grits are gritty enough to be delicious.
Cooked okra, as in gumbo, also has a nasty consistency I can't get over.
Ham, too, especially honey-baked ham.
Licorice, too.
Coffee!
Milk I used to love, but it strangely always tastes sour and leaves a heavy feeling in my stomach for hours, these days.

Used to hate orange juice for tasting like acid reflux, but I'm growing back into liking oranges themselves again, at least.
Lemon meringue and key lime pie is walking the edge, though tend to be okay when homemade rather than storebought.
Raspberries, unless that was just one bad batch I had.
I think that's it, I like all other food in the world. Love to mint chocolate.

<---(That hug is for the chocolate, not a person)