Creating One Pot Cajun Chicken Pasta is easy if you follow these steps:

1. Sauté Chicken: In a large pot, heat the olive oil over medium heat. Add the diced chicken breast and cook until browned, about 5-7 minutes.
2. Add Vegetables: Stir in the chopped onion and bell pepper. Sauté until softened, roughly 3-5 minutes.
3. Incorporate Garlic: Add minced garlic and Cajun seasoning. Cook for another minute until fragrant.
4. Add Pasta and Liquids: Pour in the diced tomatoes with their juices, chicken broth, and uncooked penne pasta. Stir everything to combine.
5. Bring to a Boil: Allow the mixture to reach a boil, then cover and reduce the heat to low. Simmer for about 12-15 minutes, or until the pasta is cooked al dente, stirring occasionally.
6. Stir in Cream and Cheese: Once pasta is cooked, mix in the heavy cream and shredded cheddar cheese. Stir until the cheese is melted and the sauce is creamy.
7. Season to Taste: Adjust the salt, if necessary, to enhance flavors according to your preference.
8. Serve Hot: Garnish with fresh parsley before serving for a pop of color.

This straightforward process will lead you to a delicious and filling meal that everyone will rave about!