crazy8 said:2) When spring is near, feed the plants Nitrogen rich ferts so they grow like weeds and grow extra branches. Maybe do this for a month or two.
3) Once flowering has started then feed it Phosphorus and Potassium rich nutes for an explosion of pods.
You will find that chiles are pretty un-engineered plants and don't use much fertilizer of any kind. If you start fertilizing like crazy, your spring posts will be full of pictures of your chiles suffering from overfeeding.
As an example, tables recommend 1500ppm to grow chiles; I use 400-500ppm with great effect in hydro. I use some worm castings in outside soil plants, but that's it.