Today I noticed on my pepper seedlings that some of the leaves have on their bottom-side close to the steam some light-green-dots. To my uneducated eyes this looks like something is hatching inside the leaf. While rubbing and scratching I was not able to remove it.
EDIT: adding info as per Anubis request: Peppers are indoors using currently in a mix of self-made compost and garden soil.
Further inspection shows that only one kind of plant (but of it all seedlings) is infected: only the peppers are affected and not the chilis which are in the same mini-greenhouse (I didn't used the top of the green, only the pots).
What is it and do I need to intervene, if so how?
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Related or not but some of the leaves show white/dried-out zones on the top. Is this the result?