It looks like what mine get when the leaves get wet, then the sun comes out. I think the water droplets work like a magnifying glass and burn the leaves. Of course, I could be completely wrong...

Sorry to see you loose a pepper! but it appears to be sunscald. i had some bell peppers do it last year at my old place. gave them some calcium and less sun and p[roblem solved. i could be wrong as i am just noob.

It is a Cajun Belle, and it was in a position that it did not get any shade from the foliage. The larger peppers get shade most of the day and look much better. The next week looks to be good temperature-wise so hopefully I will not have to water in the sun.