Not Sure What The Problem Is

I'm assuming this is a deficiency of some kind. I've looked at a lot of pictures but haven't been able to determine an exact cause. It's been 4 weeks since potting this plant so it's still pretty young. Over feeding? I've been doing this for a while, not sure what happened this time. Feedback appreciated, thanks.

Not sure. Looks like a deficiency of some kind. I had the exact same thing couple years ago with some white widow autos from ilgm. Been growing for 34 years and never had that happen. Everything was right but they done just like that. I was told it was everything from over watering to wrong pH. I figured it was the seeds or the company. Good luck though