I don't know why hot chili peppers are so famous in the German lucid dreamers community. I even don't know if they have any effect on dreaming. Some dreamers say they have because of the endorphine rush after the pain fades. Other dreamers say that they don't feel any effect.
Anyway it's fun to grow chilis peppers in the garden or at the balcony. This year I have some Equador purple plants on my balcony and they grow well.
I'm looking forward to the harvest in late summer.