Gotta be a reason...maybe something with your soil, or lack of sun? Too late to fertilize, so if the plants haven't put on fruit, they probably won't make by the first frost.

My peppers always start to really put on about September. I'm covered up with lemon boys, jalapenos and a habanero right now. I do fertilize throughout the summer, and that seems to help the plants during the heat of the summer. I always over-winter one or two super-hots, since they are always slow producers in their first year. I've had a few turn into small trees and put on peppers like nobody's business. Even as a two year old plant, they still come on late in the year.