- Bring a large pot of salted water to a boil. Add the penne pasta and cook according to package instructions until al dente, about 10-11 minutes. Drain and set aside. 
- In a large skillet over medium heat, cook the chopped turkey bacon until it starts to crisp, about 5 minutes. Remove bacon and set aside, leaving the rendered fat in the pan. 
- Add the diced onion to the skillet and sauté until translucent, about 3-4 minutes. Stir in the minced garlic and cook for another 30 seconds until fragrant. 
- Add the ground beef to the skillet with onions and garlic. Break it up and cook until browned and no longer pink, about 6-8 minutes. Drain excess fat if necessary. Season with salt, pepper, and Italian seasoning. 
- Stir in the diced tomatoes with green chilies, beef broth, and heavy cream. Simmer for 5 minutes to meld flavors and thicken the sauce slightly. 
- Add the cooked penne pasta and half of the shredded cheddar cheese to the skillet. Stir until the cheese melts and coats the pasta evenly. 
- Preheat oven to 375°F (190°C). Transfer pasta mixture to a greased 9x13-inch baking dish. Sprinkle remaining cheddar cheese and cooked turkey bacon over the top. 
- Bake uncovered for 15-20 minutes, until cheese is bubbly and golden. 
- Remove from oven and let cool a few minutes. Garnish with chopped green onions. Serve warm and enjoy.