Transparent "oil" spots on leaves

[RiverPlate11]

-Starter from seed.
-3 weeks from germination
-1 veg organic fertilization
-It was raining a few days ago
-With the raining I had some little flying green insects.

Hi, I found some transparent spots on some leaves of my plants, what could it be? Should I cut the affected leaves?

 

[Beachwalker]

That's a leafhopper