After @LouDog420 said my plants were looking Sour Jack-y I did some digging and found this lovely post from Karma about it, it seems to be a plant that, along with the Lucifer OG, he wishes he still had:
Beautiful plant and I can see what Lou means with the look it has, neither of mine have gone purple but the structure is very similar. I can’t wait to try the straight up Sour Jack F2s!