depressed plant... but y?

ok so far this is the only one to do this.

Many things can be going wrong with your girl. Need more info. What nutes are you giving, Ph etc.
The photos are kind of dark. But, those leaves look very dark green.

GH Go Box. 10ml Thrive Bloom, 2.5ml bio bud, 5ml CaMg+, 5ml Bio Marine.
Soil is Meh pile of dirt< tho it seems to be high PH> put water thru @ 6.5 comes out 8+<using dyes>

could it be over packed roots, the drainage on it sux slow draining, highly packed