Here's how we do it...
Green-ness: 5/5 if you are using home made/home gown ingredients. 5/5 for eating pizza and not supporting fast food corporations!
Frugal-ness: Depends on what you put on as toppings... Prawn and lobster is delicious but not very frugal! But overall, its got to be cheaper than buying commercial ones!
Time cost: An evening!
Skill level: If you can make pizza in your oven, you can make these! Just experimentation and a relaxed attitude to carbon in your pizza!
Fun-ness: Its one of the most anticipated meals of the week!