Yes, I appreciate Jeremy Bulloch and Tem Morrison are very different body shapes and the height difference is pretty big but....
Could they have resized the armour so it doesn't just cover his chest and leave his whole belly exposed?
The bottom edge of the armour sits in a most unflattering place, right on top of his paunch.
He's wearing the Mando romper suit now. Bit of armour on chest, unarmoured belly, groin, straight down to kneepads. Not a great look for someone of Tem's body shape. Its not as bad as the potato sack they put that poor girl who played Rose Tico in, but still, it's about as unflattering to Tem's body type as they could go.
It reminds me of the guys who were first issued their stab vests when they were young and slim. Fast forward a few years and instead of covering their whole front, it sits on top of their bellies.