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

1. Prepare the Chicken: Season the diced chicken breast with Cajun seasoning, salt, and pepper.
2. Heat Olive Oil: In a large pot, heat the olive oil over medium heat.
3. Cook the Chicken: Add the seasoned chicken to the pot and cook until browned and cooked through, about 5-7 minutes. Remove the chicken and set aside.
4. Sauté Vegetables: In the same pot, add the chopped onion and bell pepper. Sauté until softened, about 3-4 minutes. Add minced garlic and cook for an additional minute.
5. Add Pasta and Broth: Stir in the penne pasta and chicken broth. Bring to a boil, then reduce heat to a simmer.
6. Cook the Pasta: Cover and cook for about 10-12 minutes, or until the pasta is al dente, stirring occasionally.
7. Stir in Cream: Once the pasta is cooked, stir in the heavy cream and return the cooked chicken to the pot.
8. Add Cheese: Mix in the shredded cheddar cheese until melted and creamy.
9. Adjust Seasoning: Taste and adjust seasoning with additional salt and pepper if needed.
10. Garnish and Serve: Remove from heat and garnish with chopped parsley before serving.

These steps will guide you to create an incredible One Pot Cajun Chicken Pasta that is bursting with flavor and sure to impress.