Heat olive oil in your skillet or Dutch oven over medium heat. Add the chicken pieces and cook until golden and no longer pink inside. Season with salt, pepper, and Italian seasoning for extra flavor.
Add minced garlic to the chicken and cook for 30–60 seconds. This releases the garlic’s aroma and infuses the chicken with flavor without burning it.
Pour in the marinara sauce and chicken broth, stirring to combine. Bring it to a gentle simmer, allowing the flavors to blend and create a rich base for the pasta.
Add uncooked pasta directly to the sauce. Stir occasionally to prevent sticking. Cook until the pasta is tender and has absorbed the sauce, about 10–12 minutes.
Remove the skillet from heat and stir in shredded mozzarella and Parmesan until melted and creamy. Taste and adjust seasoning as needed. Optional: sprinkle with fresh basil.