Add Peppers: Incorporate the diced red and yellow bell peppers into the skillet, cooking for an additional 4-5 minutes, or until softened.
Combine Ingredients: Stir in the crushed tomatoes, chicken broth, dried oregano, dried basil, red pepper flakes (if using), and season with salt and pepper. Bring the mixture to a boil.
Add Pasta: Once boiling, add the penne pasta to the skillet. Reduce the heat to low, cover the skillet, and let it simmer for 12-15 minutes, stirring occasionally to prevent sticking, or until the pasta is cooked to al dente and the liquid has mostly absorbed.
Mix in Pepperoni: Stir in the sliced pepperoni and cook for an additional 2-3 minutes, allowing the pepperoni to heat through and flavor the pasta.
Cheesy Finish: Remove the skillet from heat, sprinkle the shredded mozzarella cheese over the top, and cover the skillet for 2-3 minutes until the cheese has melted.
Garnish and Serve: Optional: garnish with fresh basil leaves. Serve hot, and enjoy your delicious One-Pan Pepperoni Pizza Style Pasta!
Notes
Feel free to add more vegetables or adjust the spices to your taste.