Preheat your oven to 475°F (245°C). Place a cast iron pizza pan in the oven to preheat as well.
In a skillet over medium heat, cook the chicken Italian sausage, breaking it up into small pieces with a spoon, until browned and cooked through. Drain excess grease and set aside. See link above for the Meat Chopper tool I use to break up the meat.
Roll out the pizza dough on a lightly floured surface to your desired thickness. Carefully transfer the dough to a piece of parchment paper (paper sides are just a bit wider than the cast iron pizza pan) and place on a cutting board/pizza peel.
Then, begin to assemble your pizza directly on top of the parchment paper. Brush the dough evenly with olive oil and sprinkle Italian seasoning over the top.
Sprinkle mozzarella cheese, then the cheddar cheese over the entire surface of the dough.
Evenly distribute the uncured turkey pepperoni slices and sliced chicken Italian sausage over the cheese.
Sprinkle Parmesan cheese over the top.
If desired, sprinkle red pepper flakes over the pizza for some extra heat.
Remove the preheated cast iron pizza pan from the oven and next, carefully transfer the pizza (parchment paper and all) onto your preheated pizza stone. Carefully transfer the pizza back into the preheated oven.
Bake for 8 minutes, and then carefully remove the parchment paper, pulling it on one side as you lift up the crust with a spatula. Rotate the pizza and continue to cook for another 10-12 minutes, or until the crust is golden brown and the cheese is bubbly.
Once baked, remove the pizza from the oven and let it cool for a few minutes.
Garnish with fresh basil leaves, if using, before slicing and serving.