I certainly hadn't been expecting that. What pizza fetish?
"Well," she said. "He goes for a pizza on p5, she's thinking about getting in pizza on p8, they're at a pizza restaurant on p10, her mates are heading off for a pizza on p17..."
Oops. My default setting when I think of food eaten outside the home is obviously pizza. Which is weird because I hardly ever have one, but it's obviously my default setting: when in doubt, let them eat pizza.
I think we all have our own personal collection of default settings, and it's a good idea to become aware of them. Character gestures - biting lips, running hands through hair, running fingers round the rim of wineglasses are all some of mine. Scene settings - my characters often settle down for tea in their kitchens, one of the dullest settings possible. Food - pizza, obviously, but also mushrooms and red wine because they're the two food stuffs I can't stand and I want to make it totally apparent that the characters aren't me. (If only it were that easy...)
One of my writing friends has a tendency to have her characters take long, long baths. Another has characters looking at their hands in minute detail as their fingers stroke things, or stuff nestles in their palms. I've seen short stories featuring Ron, Don and Ben, with the author blissfully unaware.
When the first draft is being written you're trying so hard to get the story down you grab at the first thing that comes into your mind. That's fine, but but you have to be prepared to go back and eradicate any sloppy gestures, settings or whatever you've given as a default position. So, expect no pizzas in my next book. It's going to be fish and chips all the way.