As you can see, all normals are facing out.
The wearable has the look that you’re seeing because Jon specifically asked for his items to be flat shaded instead of smooth shaded, to try to give the feel of his 8-bit NFT collection.
Hope this helps. If there’s some rule about not allowing flat shading, it will take next to no effort on my part to fix them for Jon if that’s what he wants, just say the word.