The mod works as intended when display from your main hand or offhand or even dropped, but it does not render the texture in the inventory and just displays the default texture or from the original texture pack assets instead of the named texture

Minecraft Version 1.17.1 | CITResewn Version 0.5.4 | Texture pack - NewDefault+v1.44

Marking as stale.

If I were to guess, you have Eating Animation installed which is known to cause this bug.

Upload your logs. (.minecraft/logs/latest.log)