Hot Peppers Dropping Leaves

[natural]

Hi all,

I have very little experience growing hot peppers.

Things started well with good early fruitset. Suddenly, many of the plants are dropping all of their leaves. Most of the leaves are still green when they drop.

The peppers are in 5 gal plastic bags or pots. The plants are in full sun all day with 90+ degree temps. I have tried to let the plants stay on the rather dry side. I probably give the plants a little water every other day (the bags do dry out a lot in this heat). Also, some but not all the plants dropping leafs have some leaf spots (septoria that blew over from the tomatoes).

Any ideas as to the cause? Thanks, Bill