He states (in Pepper forum) that the discoloration affects both young and old leaves. Leads me to suspect manganese deficiency.

But looking again there seems to be a bunch of little white spots on the leaf. I've never seen the like.

Dennis

You live in my area, well close enough anyway. We have whiteflies here. My poor peach tree has them. Its leaves look like this. Check really closely especially under the leaves and see if that is what that is. Looking at your picture, it looks like you have them, but its hard to tell for sure. They will jump or fly away when you tap the plants. From what I've read all you need to do is wash off the leaves a couple of times a day until they are gone. I'm sure if you look them up you'll see what I mean.