Crumble the ground beef into the bottom of a 7 quart slow cooker and add in 1 cup of the broth, reserving the rest for later.
Cook on low heat until the beef is cooked, about 2-3 hours. (Mine was good at 2 hours.)
Once cooked, stir in 3/4 cup of pizza sauce (reserving the rest for later) along with the pepperonis, ham, Italian seasoning, salt and a pinch of pepper until well mixed. Then, stir in the pasta and remaining 2 1/2 Cups of broth.
In a small bowl, whisk together the remaining 1 Tbsp of chicken broth with the cornstarch until smooth. Stir into the slow cooker.
Cover and turn the slow cooker to HIGH heat and cook until the pasta is done, about 1 hour. You don't want to overcook your noodles, so I recommend checking about 45 minutes in and watching them closely.
One cooked, stir in the cheese and remaining 3/4 cup of pizza sauce.