Pest???!!!

Does not look like pests to me. Insect bites tent to brown and bruise. And they eat in circular patterns from my experience. Had caterpillars once outside. The leaves edges are healthy and green even where the damage is. Could have happened if they got dry and ripped or in early stages in life from handling and not noticing like is said below. The plants looking proper green in the diary thumbnail. Nothing to worry about. Keep up what your doing Good Luck!

@Capo420 i was supposed to also mention that the use of Diatomaceous earth can help deter most bugs etc I like to sprinkle some on the top of my soil and if I see bugs/pests I actually spray the whole plant with DE mixed with water that leaves a chalky residue on the leaves that the bugs can't stand

But the first one could be possible if it was tucked under other leaves or something where it had contact with something and had air movement it will just slowly work away at the leaf like that and cause the missing tissue

The last two look like they could easily be from some physical trauma you may have done and not realized. The first picture is the one that seems like a pest of some sort. I had something nibbling at my seedlings a while back and it actually ended up being a mouse nibbling at them. Consider if that’s possible..