I would typically agree, but the portobello is a really hearty mushroom. We tried this as a side before, and really, it just fills you up too much. There's a reason the veggie-heads use them as a burger substitute.... You'd be surprised. So far, it's the ONLY meat-free dish I can think of, that I eat, lol....
As for the frozen pizzas....we do the same, and doctor them up with more pepperoni, onions, peppers, etc. (we get the bags of seasoning veggies, as they have both), and more cheese. Just for nights when we don't have time to cook. More of an emergency meal than a planned one. Otherwise, we just get the stuff to do our own pizzas. It's remarkably easy, quick, and tastes a hell of a lot better. It just takes a little more prep and cook time.
