Preheat your oven to 500°F
In a saucepan, melt your butter over medium heat and add to it your flour. Whisk together until a thick paste forms.
A little bit at a time, add your milk to your butter and flour mixture. Each time, let the mixture thicken again before adding more milk.
Once you have a thick, creamy white sauce, add your cheddar cheese and allow to melt.
Add your paprika and chili powder to your cheese sauce and stir to combine.
Add your cooked pasta to your cheese sauce and stir until all of the noodles are coated.
Roll your pizza dough onto your pan and top with your macaroni and cheese and bacon.
Place your pizza into your 500°F oven and bake for 8 minutes or until the crust is firm to the touch.
Slice your pizza, serve, and enjoy!