Id say she looks a bit light shy. Leds, right? Old growth looks nice and green, new growth a bit pale. If your soil nutes were finishing id expect some missing N which would be the opposite, paleness starting on the bottom.
Is she transpiring properly? What temps/rh? With leds its better to be a bit on the warm side rather than cold, both to get her drinking and keeping photosynthesis going. In veg try for +77F. Back of the light a bit, dial in environment if need be and maybe a touch of calmag in the next few waterings.