Peppers seem to do that when it rains too much. I haven't researched it much to figure out what it was, i suspect something fungal as opposed to bacterial.

I've been lucky enough where it's only one or two leaves per plant affected, so i would just yank off those leaves and the problem never seemed to return. A minor issue in my experience, hopefully it's the same for you.

In the meantime, keep the leaves as dry as possible, no overhead wetting (this applies for anytime, not just when a plant is infected). If it gets worse anytime soon, consider spraying with fungicides that treat both bacterial and fungal infections. And watch you don't spread it by touch, via hands or pants.

This post was edited by sjetski on Mon, Jun 17, 13 at 21:19

Wish I had read that last part before I squished all my aphids, starting with that plant and moving to all the rest. We'll see,