See tomato post.

Here is a link that might be useful: Sunscald

I've had very little luck growing peppers. 8 outta 10 plants died. Of the two that actually grew peppers, both had the brown spots on them. I cut open the peppers and found worms. It's the same worms I've brought up in another topic.

The brown spots on my peppers I've had look real similar to the pepper with the brown spot you've posted. I've even gone to the local farmers market and checked out their peppers, bought the ones that had brown spots on them, cut them open and saw the same worms in them as well.