Hi Bro,
those scratches seem to be mechanical and are 2/3 days old 'cause they are already healed, probably made at the birth of that pair of leaves (the damage is mirrored) . Second hypothesis caterpillars, as they start to eat from the edges.
But stay relaxed for Bubblegum, these holes will not hurt growing in any way and the leave will not fall. Pay attention instead to jack herer because the seedling is very small. Consider the fun of critter hunting. 👊