Well, at least the pizza has tomato in it...
Pizza is apparently a good way to trick kids into eating stuff, enough cheese and they don't notice. Hell, I'll even eat mushroom on a pizza, if it's thin enough...
Crap parenting, anyway. While I quite understand people, including kids, having genuine food dislikes (me and mushrooms for example), that is just pickyness that has been allowed to go too far. Although it's probably also laziness - not wanting to be bothered with having a fight over it. Thing is, you only need to fight a couple of times, when a kid is young enough, and then they learn to give in.
When I worked at Iceland, we had a customer return a pack of our new premium vanilla ice cream, as it had 'little black bits in it'. We told him they were vanilla seeds, but he demanded to exchange it for a litre of Walls bog standard yellow...