Probably the stupidest food question you'll ever see

Hi all! I'm aware that the knee jerk answer to this question will probably just be "don't go to New Orleans, then!" But my husband has been wanting to see the city for years, and it was already my favorite place to visit before we even met.

Here's the problem: he has an allergy/intolerance to one of the Holy Trinity ingredients that is in almost ALL of the food. He's got a weird, occasional nightshade sensitivity to two things we've identified. One of them is eating BELL PEPPER. He isn't sensitive to other peppers, but this one messes his tummy up.

Is he just going to have to pack his own food for this trip? Do y'all know good places we can go where there are menu items he can have?