Nitrogen deficiency?

Good morning all! Got a quick question, im trying to figure out if this is nitrogen deficiency, i tried looking around a few websites to confirm, but cant really tell... The very bottom leaves (the first set) have yellowed up and have fallen off, they were extremely small though, and now these set of leaves (pictures) are starting to yellow and im sure they will end up falling off as well. Is this nitrogen def? or is it because they are not receiving the correct amount of light? The rest of the plant looks fine (imo anyways lol). I have yet to feed her any nutes yet, because she hasnt showed any "real" problems. What do you think? Nitrogen def? or is it because of lack of light?

I was reading that the yellowing leaves start at the bottom and progress upwards.

I also LST'd her for the first time yesterday!

Appreciate all the help!
Chris

That looks normal from my limited knowledge, and they look good

Sweet! thanks for the reply!

Need natural lighting for pics

^^^What he said^^^
Post some pics with the lights off...we can't really see...