Early Nitrogen deficiecy?

I'm not exactly sure if nitrogen deficiency would be what i would call it but i need some opinions. The lower leafs are changing color but rather fast. with in a week they changed quite a bit. She has only been in flowering for a month now, as you can see in the pictures they are dark green and really pale yellow at the bottom and they don't like like their dying just loss of color. one leaf has a green trim around it, not dark but faintly. i couldn't match it to any of the references i have. can anyone help?

your root system is suffocating due to lack of drainage...and probably salt locked...that thing is tiny for a month into flower...that plant should be alot taller if you gave it any sort of veg time...

well i only vegged her for two weeks, and i dont really move the lights like it should, i'm wanting her to stay fairly short. i dont have the space to let her stretch. but the drainage is really good, its mostly coco and peat moss, i dont over water her. and wait untill the soil is almost dry before watering again.

Looks like N def

Edit: I like HG Magic Green. Foliar feed. Works fast.