Research group Technomic reports that 41% of consumers say they eat pizza once a week. Two years ago, that percentage was just 26. Why the jump? Pies now come with gourmet ingredients and fancy pedigrees. Eateries advertise how the pizzas are prepped -- hearth-baked, wood-fired, made over coals or cooked in a brick oven. In full-service, sit-down restaurants, pizzas come in more vegetarian, or “garden,” varieties. At fast-food sites, multiple meat toppings and calzone-style stuffed pies are becoming more popular, according to Technomic.