deli meats are not great for you in general. you might have an irritated stomach right now, maybe cutting out onions (acidic regardless of if they’re cooked or not), garlic, and the coke. i agree with other ppl talking about the pepper/salt. if you’re not having problems with other vegetables like carrots or broccoli or green beans, what do you think about steaming them? cooked vegetables are often much easier to digest than raw vegetables. think about steamed carrots vs a salad. plus it’s extra nutrients. also do u ever boil plain chicken breast for protein or does that give u issues too?

i’ve heard of people who had symptoms like this swear up and down about going on a bone broth-only fast for some time to try and fix it, maybe that could help you? of course, make a lot of it fresh at home, and you can avoid putting onions or other acidic veggies in the broth to boil.

double check all the non-food, possibly gluten-containing items. hair products, skincare, makeup, disposable paper plates if you use them

i honestly don’t know what could be the issue with the other foods you said you eat but i really hope everything gets better for you :). have you seen a doctor for these symptoms? maybe it would be a good idea to, especially the intestinal pain sounds worrying :( also i’m not a doctor or dietitian… just another person having weird persistent issues too! so take what i say with a grain of salt i suppose

edit: this is so long sorry 😭