Never actually thought of it in that exact way before, but yes, I'd say so. I have the same sort of response if I eat fatty/oily foods in too great a quantity or without digestive enzymes. I think of it as the food triggers the Crohn's bug which causes inflammation and fever. Sometimes my belly is downright hot as well.
To me, running a fever is always a sign the bug is on its feet and looking to kick *ss, and my diet is wrong.
And yes, I too was a peanut butter addict, ("Hi, my name is Cowpat Ken...") until the time they took me into hospital after yet another bout of "appendicitis" after eating peanuts, when they whipped out my vermiform appendix and said the residual inflammation would die down. It's been 25 years and I'm still waiting...
Now, if I'm feeling Cresta Run suicidal, I can manage a single jar before all H*** lets loose.