Hi
@KINDLY1! About the plant in general : you're having a nitrogen toxicity, also called "the claw" because new leaves appear twisted/curved like a bird claw. About the leaf on the picture, this could come from a wrong manipulation in the past, or this could come from a bug/insect. I'd recommend to have a closer inspection onto/below the leaves, and at your medium's surface. Hope this will help, keep us up-to-date and happy growing! 👊