Spray bottom and sides of a large slow cooker with nonstick cooking spray.
Press pizza dough into bottom of slow cooker until it reaches all edges and bottom is completely covered. Spoon over pizza sauce and spread, leaving about 1" of dough around edges. Top with cheeses, pepperoni, and spices.
Cover slow cooker and cook on low until crust turns golden and cheese is melty, 3 to 4 hours.
Remove lid and let cool 5 minutes.
Using a spatula, remove pizza from crock pot. Garnish with parsley, slice, and serve.
Recipe by Cooking TV Recipes at https://cookingtv-channel.com/slow-cooker-pizza/