Zombie Kush Ripper Seeds

I had to go away for 3 weeks and left the plants in the care of a friend. Unfortunately, I see that some of them have a problem that I need to diagnose. I threw one of them away because it turned out to be a mutant that had no chance to grow. Unfortunately, they do not look like plants that are in the 3rd week of the growth phase. They seem to be a week late. They are terribly unstable, some bigger, some small. In general, the conditions were not the worst. 23-25 degrees, 55-65% humidity. Unfortunately, I noticed a few Fungus Gnats, so I assembled a lot of sticks and used Soil Attack. Hopefully now that I'm here they'll bounce back and fix themselves. We'll see what they're like next week.