When I say pizza is unhealthy personally.. I mean the take-out kind. Like pizza hut, which happens to be the only kind I've been able to get kiddo to eat.
I do recognize the home-made stuff is healthy, and even include a version of it as part of my eating plan
You're right though, about certain foods. A few years back I use to think peanut butter was unhealthy, or bread.. but really a lot of it is how it's prepared and how much sugar is added to it. The foods alone aren't the problem.