Roger I have the same problem when spider mites are starting to attack my plants. You cannot see them with the naked eye when they 1st are populating the plant. Check the undersides of the leaves real good and tap them on a piece of paper. If you see small dots moving this is your problem. Also seen it from excessive sunlight. You might note the location of the affected plants vs the non affected ones. Your leaves are still green so you are on top of it before it becomes a problem. Jim

There's a few spots of brown on the leaves, but that's not particularly noteworthy. When I've seen wind / sunburn, the edges of the burn aren't as pronounced as what I see in the small spots on those leaves. Could be a lot of things; nothing I'd worry about though. The yellowing is pretty dead-on for a poor-draining soil / too much water condition though. The plant looks too young to be losing leaves due to age, so I doubt it's that. What are they planted in? From the pictures it looks fairly dense and not much of anything in the way of perlite to keep the soil loose and draining.

I have the same problem: I did some research and think it may be bacterial leaf spot. I am not a professional, just a simple backyard gardener like you. I live in Florida. It has also killed over 3/4 of my bell peppers, along with the tomatoes. If you find out any info, contact me !!! What I read, that if it is bacterial leaf spot, there is no cure: pruning off dead leaves helps: but it will spread from plant to plant. Fungus splashes up from the soil, when you water, so keep splashes to a minimum. Julie Leahy at G. mail is where I can be reached.

Finding these spots all over my peppers. What is it ? Doesn't seem to match anything I looked for on-line. Could someone please help. It seems to be spreading :(