When you buy a bunch of seeds of a known strain from a reputable seed company, it doesn’t mean some of your seeds won’t still come out as kinda duds. There are genetic factors that come into play even from “self feminized” pollination. In a general perspective, a seed made from the mother plant with “feminized pollen” from one of its own flowers that had been forced to hermaphrodite, is almost like a clone of the parent plant. But it is not a perfect clone, you still have a splitting of the genetic information and a recombination of said genetics. There are other genetic factors as well that can change the new little seed, like epigenetics as well as other factors. This one version of pineapple ice may just like things a bit differently, drier or wetter soil than the rest, a lower or higher PH than the rest, or slightly different temperatures than the rest. Then there is the chance that no matter what you do, it will still always look droopy and depressed.