I have had this happen to several of my peppers (especially hot ones) and it seemed to be over watering for me, they were in pots and they seemed to get so much water and could not dry out. I never have this problem in the ground - only pots, I have tried everything and now when we get bad rain storms (FLROIDA every day) I move the pots - it seems once they get to that point there is no coming back. I have even tried re-potting to dry the soil out, cleaning roots (don't ask) and I could never get them back to life. Good Luck
I love this! - There can be no other occupation like gardening in which, if you were to creep up behind someone at their work, you would find them smiling.