I've tried that before but I found that the texture was a bit chalky and if I somehow inhaled it then it would cause a coughing fit.
Thinking back I probably just put too much of it on the ice cream.
Thinking more it would be interesting to maybe add a little chili powder to the cocoa powder.
Yup it's incredibly easy to overdo it. Think more like a dusting, not a layer. Chili sounds awesome I should try that.