I'm assuming pic 1 & 3 are the Vanilla Kush, if there from Barneys' there's nothing wrong with them but suspect genetics. Now to be fair my Vanilla Kush look like shit (leaf discolouration, skinny meagre root ball, thin leaves) but the buds have packed on some good weight, I am seven weeks into flower and they are monstors compared to the other strains I am growing.
I don't think anybody can help you with the current pictures posted.
regards,