Make chilli pepper and cayenne only a pinch.
Cook in a dish and can move it onto a pan at the end so not to get the drying rack all burnt
For Britts rub, for 4x the normal serving (eg 32 total), use 1 tbsp of chili instead of 4 tbsp, 1/8 tsp cayenne instead of 1 tsp, and 1 tsp salt instead of tsp. Estimated mix volume per 4 pieces of chicken is: and per 8 pieces of chicken is:
For Matt's rub, use the specified proportions. Estimated mix volume per 4 pieces of chicken is: and per 8 pieces of chicken is: