Plants that get this funky look are typically infected with broad mites or hemp russet mites.
Both are so small that proper detection requires a microscope. Telltale symptoms are distorted, twisted, blistered, or glossy-looking leaves.
These mini-mites can pack a mighty punch. Their presence usually goes unnoticed until plant damage occurs, and by then, it's too late.
Instead of taking curative measures, it's best to toss affected plants and then take measures to protect the rest of your crop.
Many growers have good luck using horticultural oils, which essentially smother the pest.
If you release beneficial insects into your crop on a regular schedule, work with your insect supplier to develop a spray program to help prevent broad mite infestations without killing off your beneficial insects.