Even the best and most experienced gardeners among us suffer from pests affecting our plants and crops. When giving grow your own a go here are some useful notes from articles I have read adding in my own personal experiences from the past few years to protect your red hot chillis.
Botrytis may also pose a problem especially at the base of the plant and the fruit. It begins as a brownish spot that develops into a grey mould. It is particularly prevalent when it is cold & damp. Good ventilation will help stop this occurring, removing all dead or injured plant material before it becomes infected. Remove all infected material by cutting back into healthy stock and burning or binning the infected stem. Do not compost diseased plant material. Isolate infected plants to prevent the disease spreading don't be tempted like I did once to keep them going to get just one more chilli!