Someone with the opposite of a gluten intolerance. A person who enjoys gluten so much, food ethics may be set aside for the sake of consuming gluten.
A gluten slut loves all forms of gluten, not just including bread and pasta but also gluten-containing condiments like soy sauce.
I'm such a gluten slut lol, I love bread and rice. I'm so lucky I don't have a reaction to it otherwise I'd be a sad girl.