I know what you mean. Being somewhat larger than chunky, I find what I consider comfortable differs greatly from someone with an ideal BMI. I’ve excluded seats because the bolsters dig in, either one leg or both or the sides of the back are in my ribs.
I'm Autistic, if I say something you find offensive, please let me know, I can guarantee it was unintentional.
I'll try to give my honest opinion but am always open to learning.
Mark