Ive has a few plants over the years do something similar, and i could never really determine it to be an issue or problem, nor what was causing it.
Like was mentioned some plants variegate. On the ornamental side of plants, variegation is a fairly prized and sought after trait. It can quintuple the value of a given columnar cactus cutting if it's variegated. Same for ornamental grasses.
This does look like it could potentially be some form of mosaic virus too though. Def keep an eye on it to get worse or the affected growth to warp or do anything strange like that, if it does seem to get worse, (assuming you can) id quarantine it from the other plants until you know for sure what it is. A mosaic virus will sit on one plant for a bit, but then will start jumping ship to similar plants near by. IIRC there have been a couple hemp specific mosaic's isolated and catalogued in recent years now too, may be remembering wrong though.
Mosaic viruses in cannabis are very rare as far as i know though, more often then not what appears to be a mosaic of some kind will just turn out to be some mild variegation
@LoveGrowingIt on the light leak side of things, as long as the light leaks are very small and consistent night to night ive never once in many years had issues with hermie or anything from it. All my plants this would seem to affect would tend to spit bananas in later flower no matter what if there were any number of mild stress factors present.
Bouncing photoperiod around, or exposing the plants to more then quick flashes of brighter light during flower, now that can def cause some confused plants lol. Ive gone multiple grows before realizing some of my interior tent devices had LED's that were red or blue on them though, Ive used dirt cheap tents with tiny light leaks scattered more then nicer tents. Assuming the plant doesnt have a genetic predisposition to hermie traits though, you can do a lot more then tiny ight leaks to them and they wont hermie. You can bring them to the point of near death halfway through flower and they wont hermie. Also, the moon lol. I've grown under that giant light leak many times before without issue.
