Hello
All we can do is speculate and I'm no expert...but it looks a little like a thrips damage or possibly spider mites. Can you scout the bottoms of the damaged leaves get some good clear photos and another couple clear closeups on the damaged top leaves.
If so don't worry, thrips are pretty common and easily managed...and even spider mites too can be handled.
I'd love to see any other photos you get so I'll remember to check back.✌️