I would honestly suggest trying something else for those credits. Since they changed it a few years ago to automated instead of hand tossed, we always say "friends dont' let friends order disney pizza".
Other pizza options at disney include:
Wolfgang puck cafe downstairs for TS credits.
Wolf Express at westside or marketplace for QS credits.
Via Napoli at Italy in epcot for TS credits.
Via Napoli also has a walk up window. I was just there and it doesn't seem to accept any dining credits but the pizza is a huge thick square slice as big as the plate and is $4.50 for cheese per slice and $5.25 for pepperoni.
Hess gas stations at DTD and exit of MK. The one at the MK exit is DELICIOUS!! $7 for a large thick crust pizza. Best pizza i've had anywhere for a long time. (obviously no dining credits accepted and the MK location would require having a car).