Marinade Chef NFTs have been deprecated and a migration tool is available on Marinade's dApp. This migration will burn your NFT and transfer your locked MNDE to Realms.
You can start the unlock period on Realms and get back your MNDE after 30 days if you desire.
To migrate your locked MNDE:
Visit the legacy MNDE page to complete the migration.
Click "Migrate" to burn your Chef NFT and move the MNDE.
This will migrate the underlying MNDE to locked MNDE in Realms.
You can also click to claim your MNDE and wait the 30 days to burn it.
Be sure to download your NFT image before burning if you want to save it.