Yes, it really is quite spicy. This is one of those items I felt compelled to try. I was at Thailand for a few days after my belletristic work at Italy. I traveled nearly 800 versts north from Bangkok to Chiang Mai and Pai. Burger King has a notable presence at all the major airports of Thailand, domestic and international. And after first seeing the announcement for this burger at Bangkok, and again at Chiang Mai, and then again at Chiang Mai, I could resist no longer.
It comes with a substantial layer of red chili peppers. You know how a few pieces of lettuce, or perhaps a drop or two of sauce may fall from a burger while eating? With this burger, it was chilis that were falling out. And that was probably for the best. Because many chilis remained. It was an interesting meal.