Hi
@Sctanley007! My bet is that something (mostly your fingers/nails) harmed the leaf a few days ago. When growing, this slight injury has become more and more visible. Nothing to worry about, you're certainly going to tuck this leaf anyway when doing your first pruning. However keep a close eye onto other leaves, if the problem spread, then I was wrong, and we'll need new pictures & informations to refine the diagnosis. Hope this will help, keep us up-to-date and happy growing 👊