Do they look better after feeding?

In the fifth week of flowering, you want nearly all the nitrogen out the soil, this is a trigger for senescence, which is the natural aging and eventual degradation of plant tissues, specifically leaves. This is a common practice to help plants focus their energy on flower development and maturation while also cleaning up the plant for a better final product. By week 5 the plant will have nearly all its flower that will exist, what we need is fattening. I wouldn't personally add anymore nitrogen , let the plant cannibalize every last ounce of green, more green you cannibalize by end of flower the better. Nutrients are mobile or immobile. For It to effect the plant across the entirety then it's most likey to be a problem linked to ph or the internal waterworks. In that case until you get a idea of where ph is at anything you add to remedy will most likely make it worse. 2nd picture looks like yellowing from senescence then you fed them, the yellowing changed to lime green all over (generally high pH relates to micronutrients) Calcium and magnesium become problems too. Might not even be short in medium if the ph is out of range then nothing wants to uptake.