I knew Babe Ruth ate hot dogs, and Len Dawson would have a smoke, but serious singers do NOT typically have mucous producing cheese pizza during their work.
She is not a serious singer. Just a cheesy performer with good marketing.
I always ask for extra "mucous producing cheese" on my pizza!
Seriously: Some pizzas come without cheese.
You can also ask for extra anchovies, or for no garlic.
Regards,