I thought this may have been a texture pack issue on my survival world so I removed the texture packs, didn't make a difference. I then created a new world no texture packs applied the same thing happened again. Here you can see unenchanted armour and tridents on the left and enchanted armour and tridents on the right.
MCPE-175122
Enchanted armour and tridents have messed up textures since 1.20.30 update
Resolved
Duplicate
0
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We're tracking this issue in MCPE-174535, so this ticket is being resolved and linked as a duplicate.
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