The food is just fine. It is not horrendous. I had the exact same question. If you know how to navigate a buffet, you’ll eat well. You go to Chef Mickey’s for:
PREMIUM character interaction.
I’d suggest to go heavy on the:
Carved to order roast beef, and turkey.
It’s overpriced if you are only going for food. It’s the CHARACTER INTERACTION that you are paying for. Have your camera ready. The characters will come to you, and pose for pictures with you if you’d like them to. More than likely, you’ll see them improv some lighthearted skits that involve some of the diners if you pay attention. I thought Chef Mickey’s was an absolute riot, and the food was a decent amount better than I was prepared for it to be. It is NOT a gourmet experience, and it is NOT a Michelin star rated restaurant. BUT IT IS NOT TRYING TO BE THAT.
Go for the character experience, not the food.