Ive found that over watering causes 95% of the problems ive seen. But being rootbound is bad too your pots look too small bro i would say pot em up and only water when they wilt. Good luck bro let us know.
Repotting should help them out. Looks like overwatering and nutrient deficiency.
Edit: I'd also pinch those flowers so it doesn't waste its energy on them. They are too small for pods.
So Infinity has a winter season?+1 Dulac concerning the flower buds. I made the mistake last year of leaving the flower buds on my plants when they were only 8-16 inches tall, and kind of spindly, and my harvest was abysmal. The roots were piss-poor because of the energy consumed keeping the peppers alive, and my plants ended up dying when I tried to overwinter them
So Infinity has a winter season?
Oh yes, indeed. By logical deduction, being infinite, it has everything at all times.
On a thread-related note, I would say that the plants are being overwatered. Cut back until the top few inches of the soil are dry, because even if it looks dry on top, the soil holds a lot of moisture, and the roots will reach right down as far as they can to get it, and if the water content is just a little too high in the bottom of the buckets, it can lead to leaf curling/drooping, and in a more extreme case, edema (blisters on the leaves, not cool, I am battling the aftermath of a few cases of that )
It also looks like the newer leaves are worse, so if you have been watering a bit, or getting a lot of rain, let the soil dry out a bit. It could also be calcium deficiency, as well. What kind of soil are you using, and are you adding any fertilizers/plant foods/compost to it? Be sure to use something like Cal-Mag if your soil doesn't have a lot of calcium, since that can lead to crinkled leaves as well.
It sounds like it is a very good chance that what you have is too much fertilizer, if you added fertilizer(slow release or not) to MG soil, which is already full of nutes. I've been there, done that with the same results. They usually grow out of it eventually. Another case of too much love?
Wow. Talk about answer overload. Since it's only happening to new growth fert burn and overwatering are probably not the cause. You should check real good for broad mites. You'll need a magnifying glass as they're too dang small to see without magnification. You can put some rubbing alcohol in a flat container and snip off an affected leaf and drop in quickly. Broad mites are fast but not in alcohol. Get a good light, some type of magnifcation and get to eyeballing. Good luck.