4.8 OZ OG kush auto only 140 Watt LED!!!

You're right not to be too concerned. I don't think you've overfed, and you're not feeding any more you say so any slight overdosing is now in check. That small leaf looks a bit like light-burn and at 30cm it perhaps is a little close for this strain, but not by much - perhaps back off to 35cm (I'd not be too worried personally). She looks really nice. Leaf fingers that have some damage on them I prune. They're not doing to plant any good, and they worry me so they're gone! If more appear in their place, then I get worried, but not before.

I dont see any burnt tips maybe im blind. Your leaves are very dark green. You are at or about to cross the border of nitrogen toxicity. I see your going onto the third week of flower. Back a bit off the nitrogen.

Hi @Rezdestroyer ! As mentioned by other growers, burnt tips / yellow tips are the first signs of overfeeding. But what I see is a slight nutrients-burn, and a huge light-burn! Your weird leaf has received too much light to develop properly. I'd recommend to buy a lux-meter so you'll be able to make tests all around your plant. Hope this helps, I'll be around, keep us up-to-date and happy growing!