The bun of the Chick-fil-A sandwich contains flavored butter oil, processed sugars, preservatives, natural flavors, multiple gums, and dough conditioning agents.

“this bun is pretty incredible it contains something called flavored butter oil which is actually just a bunch of seed oils soybean oil canola oil other oils the dough also contains processed sugars so they're putting processed sugars in the chicken they're putting processed sugars in the bun there's seed oils in both preservatives in both natural flavors again kind of a sketchy term you don't really know what natural flavor means they can be highly chemically processed multiple gums xantham gum MSG flavored butter oil which is more seed oils doam the dough conditioning agent”