That's what came to my mind first - calcium deficiency. Let's see what experts say)

Ca deficiency would show up first on the newly emerging leaves, so I wouldn't think that was the case here. Seen leaf margins roll with insects like aphids and thrips. I guess it could be any number of things.

Due for a watering? How so? Because of a schedule or because the soil is dry 2 knuckles deep?

The swells and bumps you see in the leaves, especially in the first pic and on the left side in the second picture is called leaf edema and is a result of over-watering. The cells in the leaf tissue swell and deform giving the leaf a bumpy mumps-like appearance.

With peppers, since they prefer to dry out well between waterings, it is very important to determine if they actually need to be watered. Based on the photos they don't as the leaf and stem turgor is still quite stiff.

The soil surface is not a valid indication of the need for water. So stick your fingers deep into the soil first. Then, if any, doubt don't water. Peppers are far more tolerant of too little water than they are of over-watering.

In the second photo (lower left quarter) there also appears to be a bit of curl/roll of the leaf petoile (the leaf/stem junction). Any sign of aphids on the underside of the leaves? If not then I would credit and the similar rolls to the excess heat from the HID light - a small fan would help.

Sorry but I don't see any symptoms of calcium deficiency in the photos. Ca+ is normally asymptomatic in pepper leaves and only shows up in leaf tip burn and in the fruit.

Hope this helps.

Dave

no bugs as far as i can tell. ive spent a lot of time checking them over.

edema is something the plants seem to be suffering from for sure. I have been letting the plants tell me when to water from drooping leaves and weight of the pot/soil.

I have been watering about once per week on average. as they have gotten larger they dry up faster though. I have been bottom watering, filling the tray an inch or so then dumping out excess after 15 min or so.

a fan might help edema and any burn problems from what i understand so that is a good idea.

i thought Ca deficiency because of pictures and posts on here and other forums ive googled up.