Can I sue a restaurant if I get sick from the food not listed on the menu that you ate and had a severe reaction to?

I went to a restaurant, ordered a salad but description never said anything about red peppers or the jalapeño peppers that were hidden under the salad. I had a horrible reaction to it. I became sick right in. The restaurant management was rude and it was such a horrible experience. I'm on medication for my ulcers twice a day for years and was seen early in the week by a doctor who diagnosed with thrush in my mouth and on medication for that. So needless to say, when I got that jalapeño pepper I became very sick.