I don’t think that light at 2 feet is causing any issues.
This appears to be physical damage. Maybe a recent top/FIM? Could also be from direct fan blowing on it. Seen that where it grows weird from leaves constantly rubbing on each other.
Last but not least could be genetics. I’ve grown ILGM and this exact GDP from them. Far from the pinnacle of breeding standards. They’re business model is buy wholesale from random others and charge a pop because they offer 100% germination guarantee. It’s nice but when your crops constantly throwing nanners, it’s not worth it. Just my experience.