For what it's worth, restaurants should be doable with some effort. I am quite sensitive to all things in the red pepper family (including bell pepper) and am able to eat out while avoiding them if I choose my restaurants carefully. I could even, until recently, still eat some Mexican and some Italian-- recently it looks like I've developed a problem with some kind of starch, though, potentially gluten. Anyhow, I haven't tried restricting tomatoes as well, but that should not be a great additional burden beyond the restrictions I already have. Eating out should still be possible. We can talk about it sometime if you want and I can give you tips.

I find it an interesting coincidence that we're both having this problem. I've never been clear whether I have a problem with the whole nightshade family or with just the red pepper family. Anyhow, makes you wonder if environmental triggers can cause issues like this.