Stunted growth or just a weird plant? (Autos)

Hey there, have not grown in a long time so bought a tent setup recently and am trying my hand again.

4x4 tent, 400W LED light, lights on 20/4, temp is stable around 85, humidity around 50%.
They are in an equal mix of HF, OF, and Coca Fiber soil from FoxFarms, the place where the plants are in is just HF (I dug a hole and filled it with just HF to avoid nute burn)

Both these plants sprouted within 24 hours of each other, and are a week and a half old, the larger is Gorilla Glue from Barneys, the small one is ZKittles X Amnesia from 420 fast seeds, both Auto Flowering.

Any idea what's going on with the tiny guy?

Had an issue early on where I had to move my tent setup due to fluxing high temps (85-90F-93F depending) but that within the first 3 days of sprouting and they have been in stable conditions since then. Watering well and even the small one looks ok color wise, just small.

Also, what would you guys recommend for ideal overall temps? The stuff I have atm says it wants slightly hotter so I'm sticking to 85F roughly.

Thanks for any help!
(I used to be a member here years ago and sometimes lurk, but first time recent post)
 

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