I agree toss it or move it outside out of the way, tell it live or die and maybe water it, drop some fresh seed.
I think it is bad genetics, or what we called a cull (and pull). I would like to try GDP again, but the seed I would do it with is to costly.
IF my soil was "to hot" not one of the other strains objected, so I dont see that as the issue. Nor do I see not enuf nutes being the issue.
One could remove it from the soil and look at the root and see what issues that may reveal. IF the PH is way off it may not be able to grow roots into the soil. Caffeine/coffee will stunt autos a great deal and not good for any plant. I am not closed minded, but I do think its bad genetics.