Bee and I are huge fans of spicy, so we do our best to expose the kids to spicier foods. They have such sensitive taste buds though! Everything is "too spicy"... even things that I didn't realize had any spice at all.
They can now eat slightly spicy pepperoni, which is huge progress. We'll keep working on it, and hopefully they'll get there eventually. So many world cuisines depend on being able to tolerate some spices... especially important since the kids are half-Korean!