I don't know how body composition of chickens is affected by different feed compositions. It's not something I've researched. It is possible that if a chicken is fed a high linoleic acid diet its whole life, then its fat composition has a rather elevated linoleic acid composition, sufficient to reduce the rate at which some humans with particularly aggressive metabolic dysfunction can eliminate linoleic acid from our bodies to a suboptimal rate vs eating, say, grass fed beef.