What happened?

Expected:
The Jetpack would be rendered the same on the chestplate slot as it does on the Curios Back Slot.
What Happens:
It Renders super tiny as the item model instead of the Armour model.
Steps to recreate:
Install the Create: Jetpack Curios Mod
Place the jetpack on the back slot of your curios menu

Loader

forge

Mod Version

4.4.2

Minecraft Version

1.20

Relevant log output