I own some chilli pepper plants around two foot big but individual a couple of chillis!Why?
Answers: Give it a shot of bone meal...its mostly phosphorus and it should product your plant bloom like crazy!
The most imagined cause is too much nitrogen. Even when phosphorus is close by, an excess of nitrogen can cause exuberant fern production at the expense of fruits. Choose a high phosphorus (the middle number of the chief N-P-K nutrient analysis) fertilizer, something like 2-8-4, or 5-10-5.
A extent of long, cool weather can also delay blooming. Cool weather will also stunt the entire plant's growth, as pepper like hot weather.