Leaf

Classic trip damage

Looks like either a virus, or more common, some pests (like gnats or thrips). These often live in wet soil, but without more infos, I can't really help more. Hope this helps. Cheers and happy growing 👽👍

Yes, you should be concerned, this is not normal. No diary, no real info, one random picture...........impossible to give any real advice.

Check bottom part for pests.