The Greedent who once belonged to a chef is called Chef Dente in Pokémon Pokopia.
Chef Dente is one of the named Pokémon encountered as Ditto restores the abandoned world. The character's backstory connects Greedent with a former human owner who worked as a chef, adding a personal link between the Pokémon communities and the human civilization that disappeared.
Greedent is a Normal-type Pokémon introduced in Pokémon Sword and Shield. It is associated with gathering and storing berries, so a culinary connection fits the species' established food-related imagery while giving the Pokopia character a more specific history.
The answer is the character's name, not Greedent's species or a job title applied to every Greedent. The spacing matters as well: the name is presented as “Chef Dente,” a pun-like character name rather than “Chef Greedent.”