Barneys Farm LSD

All looking decent so far, expect the plant #1 which is kind of odd, taking in account the fact I've given both plants the exact same amount of water and nutrients. The leaves in plant #2 are drooping a little bit and some parts of the leaves are getting light green color. Nitrogen deficiency? I was thinking about over watering as well but it's coco perlite mix, so i highly doubt it. If you have any suggestions, hit me up!