Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a mixing bowl, combine ground beef, breadcrumbs, Parmesan cheese, diced bacon, onion, garlic, egg, bourbon, BBQ sauce, salt, pepper, and smoked paprika. Mix until just combined, being careful not to overmix.
Take a small portion of the meat mixture (about the size of a golf ball) and flatten it in your palm. Place a teaspoon of shredded cheddar cheese in the center, then fold the meat around the cheese and roll it into a ball. Repeat with the remaining mixture.
Place the meatballs on the prepared baking sheet, spacing them apart.
Bake in the preheated oven for 20-25 minutes, or until the internal temperature reaches 160°F (70°C).
In a frying pan, heat a small amount of BBQ sauce over medium heat. Add the cooked meatballs and toss to coat them in the sauce.
Serve the Bourbon BBQ Bacon Cheeseburger Meatballs warm, drizzled with additional BBQ sauce, and garnish with fresh parsley if desired.