Still looking skinny

Movemoreguy22

Hi peeps.
5ft 7 male. Weight 10.2 stone. Bmi 22.1
Quick question. Everything above on the charts mid range normal.
Why do I look so skinny. I do go to gym 5 days a week only doing body weight excerises pull/chin/push ups
Planks bla bla bla due to back surgery (on the mend). I'm staying away from heavy free weights now cos of surgery. But was lifting for years before the op.

Eating is not great hitting around 2200 a day, not always logging food in.
Due to not been at work for 2months not really getting that hungry.
When at work hitting 3000k range but still not hitting a Ib on the scales.
Anyway weight ain't the issue its more the way I look boney arms and legs. Mid section looks ok