Making One Pot Cheesy Chicken Pasta involves a few simple steps. Follow this straightforward list:

1. Heat the Oil: In a large pot, heat the olive oil over medium heat.
2. Cook the Chicken: Add the diced chicken breast to the pot. Season with garlic powder, onion powder, salt, and pepper. Cook until the chicken is no longer pink, about 5-7 minutes.
3. Add Broth and Pasta: Pour in the chicken broth and bring it to a simmer. Add the penne pasta and diced tomatoes.
4. Stir and Cook: Stir everything to combine, then cover and allow it to simmer for 10 minutes or until the pasta is al dente, stirring occasionally.
5. Mix in Cream and Cheese: Once the pasta is cooked, lower the heat and stir in the heavy cream. Gradually mix in the shredded cheddar cheese until fully melted and creamy.
6. Adjust Seasoning: Taste and adjust the seasoning with additional salt, pepper, or Italian seasoning as desired.
7. Garnish and Serve: Remove from heat, garnish with fresh parsley if using, and serve hot.

With these simple steps, you can easily create a delightful dish that is satisfying and full of flavor. Enjoy the wonderful combination of cheese and chicken in each bite!