Europeans were literally the reason that Afro-Euroasians gained access to chili peppers. Before the Columbian Exchange, the peppers were confined to Central and South America. Yet, paradoxically, European cuisine gained a reputation for incorporating chili peppers less than other regional cuisines. Why? This makes no sense.
Scientific-ish suggestions I've heard about why some regions took up chili peppers and others didn't: Chili peppers may have some anti-microbial properties. [2]