Hi I have a bhut jolokia and that had recently been attacked by aphids and I am trying to figure out why this strange scaling has appeared on the stem and under some leaves.
It's hard to decipher the issue from your pictures.. but it's possible the "scaling" is edema. If that's the case make sure to have a fan near your peppers to give them circulating air. It won't remove the edema that's already present but the new growth should be good.