It is definitely a caterpillar of some sort. Early in season, I had peppers about 6" tall. One evening I saw a small pile of what looked like 1mm or so diameter irregular shaped things on one leaf. It was like someone took a small spoonfull of things and placed it carefully on the center of the leaf. Being my first time, i did not think much of it although i suspected those were eggs of some thing. I wanted to follow them next day and see what happens to them. Next morning, i saw that all leaves on that one plant were gone. I expected the eggs to have fallen on the ground on the soil. But did not find any. No sign of any tunneling the ground. I did not find any remains of those eggs. But I was sure something emerged out of those eggs and ate the leaves in one night. There were 4 other pepper plants next tot his one. They were fine. I understand that most caterpillars go into soil during day and come at night. So, I did not want to have same thing happen to the other plants next morning. I sprayed pesticide on the soil around that eaten plant and that took care of it. The eaten plant grew new leaves and back to normal after a while. I doubt it would be dear or rabbits. On 6" plants they would not be so selective as to eat leaves only and leave out the stalks.

I agree. I had one plant that has a tall stem and had several huge leaves on it. About three weeks ago, many of them yellowed and died and fell off. I wasn't worried since it was just the lower leaves and I figured it was pretty much normal. I have several other plants but they are bushier and dont have the long single stem. I dont recall a problem with them losing lower leaves at all. My guess it is more normal than a lack of nutrients but regardless, I wouldn't worry too much and controlled nutrients are a good thing anyway.

depends how many. it is normal for lower leaves to yellow and fall off as they age. Is there still growth on top of the plant? Does it otherwise look healthy? john

just stop with the sevin ... look at the new growth ... its fine ... old injury to those leaves ... and it doesnt necessarily look bug related ... there is a very active hot pepper forum.... and they are gurus at Ps .... dont miss visiting them never expect a garden plant to look like a disney picture ... so what if it gets a little damage ... ken