At my son's school, pizza is served every Friday, along with a few slivers of iceberg lettuce drenched in ranch dressing, an enormous brownie and chocolate milk - all served in a styrofoam take-out container. This is my compromise:
Pizza from Zelda's (a local pizzeria) with mushrooms and black olives; red bell pepper strips and carrot sticks, a mini apple, and a Cliff Chocolate Chip ZBar.
waste generated: small rectangle of unbleached parchment paper, wrapper from ZBar