Clunky, cumbersome, or awkward. Something that's larger than it needs to be is blonky, as is anything that should be smaller and more trim, or that has square edges that should be rounded.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.