Let's back up. These plants were doing really well in their cell packs. Sometimes I like to compare my plants to the ones in stores and mine looked better!
When I transplanted everything, I didn't have room in the garden so I decided to put 2 habaneros in pots so I could take them with us when we move in a few weeks and gave away the rest.
Everything was looking good. I even read that a little bit of cold (but not frost) was good for pepper plants (but not eggplant).
Then I noticed a few leaves had fallen off. Then a few more. Now they're nothing but twigs. This is a bad sign.
But I have no idea what exactly "this" is.