Hey supermegadjj !
Definitely looks like pest damage to me with the holes. I would check the underside of the leaves and stems for little critters; they can be white, brown or green usually. For most pests you can use neem oil, insecticidal soap or water with a drop of oil based soap. If you use dish soap make sure it is oil based as it helps smother the critters. Another alternative is ladybugs, they like to feed on most cannabis predators.
If you can't spot any I would still treat anyways to be safe. I spray the tops, undersides of the leaves, the stems and soil every couple days before lights off. I do this for a week after I cannot spot anymore. They can be tricky to see!
Goodluck with everything!
Cheers,