1. Start by heating the olive oil in a large skillet or pot over medium heat. Add the diced chicken, season with salt and pepper, and cook until golden brown and cooked through, about 5-7 minutes. Remove the chicken from the pot and set it aside.

2. In the same pot, add the diced onion and cook until softened, about 3 minutes. Stir in the minced garlic and cook for an additional 30 seconds until fragrant.

3. Pour in the marinara sauce and chicken broth. Add the uncooked pasta and Italian seasoning, then stir everything together well.

4. Bring the mixture to a boil, then reduce the heat to medium-low. Cover the pot and let it simmer for 12-15 minutes, stirring occasionally, until the pasta is tender and most of the liquid has been absorbed.

5. Return the cooked chicken to the pot. Stir in the mozzarella and Parmesan cheeses until they are melted and the sauce is creamy.

6. Garnish the One-Pot Chicken Parmesan Pasta with fresh basil, if desired. Serve the dish hot for a comforting and easy one-pot meal that’s sure to satisfy your Italian cravings.