Hey Growmie,
This isn't from excessive nitrogen, this is from overwatering, the leaves look full of water. The way you fix this issue is to stop watering and let the plant dry out. Not completely( this will damage your roots) but close to it. Also, go longer in between watering. You also want to stop watering so often (this is usually the cause). Hopefully, I answered your question and remember Happy Growing and Free your mind one puff at a time.