Self-topping plant - Bad genetics?

[dogtomato]

This is an Amnesia Haze auto that has started growing funky the last week/10 days. Started this one from seed on 9/17, and a bunch of seeds I started a week later have caught up in size to this one (unfortunately none of the same strain). Is this common? Bad genetics or something else? I don't have room to start any more AHAs to test at the moment. Thanks in advance!!

(This is my first grow - just started in July with a single White Cookies that's been in veg the whole time and is getting waaaay too big because I am an idiot and didn't realize it wasn't an auto...)

Here's the topped AHA:

Here's the others (1 week behind, no problems):

 

[improvise]

expect it is funky genetics, your bigger plant are showing deficiency,this might help you with that as well.Cannabis Plant and Pest Problem Solver - Pictorial regards

 

[dj1714]

I have several white widows top their selves in a couple different grows. I just looked at as a plus for me because of all the extra colas that grew.

 

[dogtomato]

expect it is funky genetics, your bigger plant are showing deficiency,this might help you with that as well.Cannabis Plant and Pest Problem Solver - Pictorial regards

Thanks, yeah, I think I'm erring on the side of under-feeding. Just started stepping it up in the last week or so.