It's like she's not able to absorb the nutrients so I'd suspect root rot or she's just some weird strain that yellows/finishes really early. I had a plant like that a few years ago and thought it was screwed up somehow but the clones I took from her did the same when grown out. Crappy yields so I stopped growing that one. Can't recall the strain but it wasn't the same as yours.
I'd hit her with a low dose of hydro nutes if you have any. If the bio-herd isn't healthy it can't convert those organic nutes very well so even with good feeding the plant can't get what it needs. The site says mineral based and organic so seems like they should be working OK.
Could just be that's the way that plant/strain grows.