It is entirely possible to make a pizza with Saskatchewan ingredients.
You'll have to make your own dough and pizza sauce. Both are fairly easy. Any bread dough recipe will do -- I like to add a squirt of olive oil when making the dough. A sauce is easy to make by sautéing garlic, onions, basil and chopped tomatoes (all grown here) into a thick sauce.
Choose Armstrong mozzarella cheese because there is a good chance it was made at the Saputo factory in Saskatoon. For meat, there are lots of choices in Saskatchewan, but I like the Italian-style salami from Emco Meats in Saskatoon. Sprinkle on some homegrown oregano and Voila! You have a Saskatchewan-only pizza.
Wash it down with a Saskatchewan-made beer (Great Western, Paddockwood or any brew pub fare) and it's a glorious local feast.