Hi Lorilou, I know that you've had some inquiries about gluten, so I'm writing this to look at a different side of the salad. If salad is causing any of your problems, then consider looking at what you are putting on your salad before ruling out this dish. Many dressings contain wheat. Also, the amount of sugar or additives in the dressings could cause some problems. Do you use croutons? - wheat. And was there any seasonings on the chicken? If yes, check to see if these seasonings were a source of wheat or maybe MSG (which causes problems for some). Yes, I really recommend a food journal to see if there are any connections - don't rule out sugar, certain carbs, and sugar substitutes as these cause problems for some.Some find an olive oil/vinegar dressing very tolerable, but then again what works for one may not work for others.Good luck and keep working on it. I know keeping a food journal can be a bit tedious, but it might give some great insight.