Chilli, kebabs, now your talking my religion. My own personal opinion is that you can't have too much chilli on a kebab and there is a real art in getting the maximum amount of chilli onboard, yet still managing to contain it within the pitta bread.
I think there has to be enough so that it runs down your chin when you bite into the kebab, but not enough for it to run down your chin and drip on to your clothes. That's assuming you've got your clothes on at the time, which if you haven't, requires a huge amount of re-calculation with regard to the health and safety aspects and how much chilli is required to get the same effect whilst naked.
Iain.