Most of the common contaminants cause nausea, vomiting, diarrhea, and abdominal cramping. Usually food
poisoning is not serious, and the illness runs its course in
A recommendation would be that you wait the prescribed amount of time posted above, and afterwards purchase a pack of chicken (deli slices would suffice as well) and try a small portion.
Since it is precooked there is a very likely chance you may rule out food poisoning.