One of the biggest developments in food promotion in recent years has been the emergence of food festivals - chilli festivals incluided! Here is an example I just read about - a Chilli Festival taking place on 6 & 7 May at a fabulous stately home in the English countryside. They say there will be all manner of chilli food available to taste and purchase, possibly including chilli ice cream!
Now there's a thought ... I have yet to make an ice cream with chilli as an ingredient but it certainly seems popular with plenty of other websites offering chilli ice cream recipes. Here are two I found:
Thai Chilli Chocolate Ice Cream Recipe
Chilli Ice Cream Recipe (with honey)
How good these recipes are I can't say as I haven't tried them. That's for you to judge :)