The pepper in this new photo looks like a combination of sunscald, the tan area, and blossom end rot, the black area.
The plant itself does not appear to be thriving. Not as leafy as I would expect and not as ... perky? Leaves are hanging down a bit.
This picture is a comparison of an unhealthy and a healthy pepper plant:
Are your plants getting enough water and nutrients?
You said you are in the South. I'm in No. Georgia and with the weather we are having (excessively hot and dry), enough water means watering deeply at least every other day.