Frozen pizza is probably not very popular because it's so easy to order pizza delivery or go out to a restaurant. But my favorite frozen pizza is Amy's Pesto:
It prepares really well in our Krups toaster oven (six quartz heating elements). I let the pizza thaw for 20 to 30 minutes, preheat the oven to 425 F for 5 minutes, place the pizza directly on the grill, and bake for 10 minutes (the instructions say longer but it gets too brown in our oven...your mileage may vary). This produces a very crispy crust. They say you can bake it in a pan for softer crust.