Hard to tell with lighting as is.. even if it is mild N deficiency.. would not react by pushing N at this stage..
Looking at your current diary - if nutes are correct you are starving the plant of vital nutrients by just using the “grow” part of the trio of nutrients. Those are meant to be used in conjunction with one another throughout the lifecycle of the plant .. not just grow for veg and flower for bloom. You need all 3 in varying amounts from veg to chop