I'm having the same problems...I know mine is because it is wet and overcast a lot the last month...Peppers like lots of heat and sunshine...Are yours getting plenty....I'm not a big believer in fertilizing just because....maybe right now the best thing to do is take a wait and see attitude...

I agree that the problem is probably too much wetness or cool temps or likely a combination. Could that be different for you, from last year?

I planted about 15 pepper plants, mostly from seed. Some of them were terribly stunted whereas others grew. the difference was in the root zone - the stunted ones had fungal infections that was due to cool, wet conditions. Some of them died in the end, although I didn't notice

(got distracted and submitted the above post before it was done!)

I didn't notice ... that they had curled leaves. (I did notice that they died. :) )

Anyway, see if the soil seems cool and wet. Lay off the watering if it does, and maybe put some bricks near-ish the plants to help with heat retention.

It hasn't been hot in the past few weeks. We're supposed to get some hot days next week, maybe that will help? I will try skipping a day of water too.
thanks

If "skipping a day of water" implies that you're watering every day, that's almost certainly too often. Peppers generally prefer a fairly dry soil. The soil should get pretty dry between waterings, and it can even be beneficial to let the plants wilt slightly.

My watering frequency for the raised bed in which I grow peppers ranges from every 3 days (when it's 115 and 5% humidity) to once every 2 weeks (obviously, yours may differ, and potted plants will need more frequent watering).