The effects on blood pressure are well known, but that it can cause spasm of arteries is interesting.
Many people eat lots of spicy food daily and I never heard of serious health issues. Especially a single chip might contain a concentrated amount of capsaicin, but it is unlikely to contain much more in volume then a hot plate of chili con carne or even just a hand full of raw jalapenos. So I assume it is some underlying condition and a shock reaction and not the capsaicin itself.
I could have also picked a habanero which is admittedly a lot more spicy and it used to be the hottest pepper in the world, but it usually doesn't cause a big reaction either.
Anyway, that's missing the point. I was talking about the total amount of capsaicin which can't be really high in just one chip. It is just a tiny amount of concentrated capsaicin and I believe that people usually consume more with a regular spicy meal. Hence my believe that not the capsaicin itself is the problem.
I too hate the extract sauces, they're just painful without the flavour. As far as I'm aware these crisps don't use it. The world's hottest ramen challenge I did was just reaper mash missed into the sauce.