Bring a large pot of salted water to a boil. Cook the penne according to the package directions until al dente. Drain and set aside.
8 oz (227 g) dry penne pasta
While the pasta cooks, heat the olive oil in a large skillet over medium heat. Add the bite-size chicken pieces and season with the Italian seasoning, kosher salt, black pepper, paprika, and garlic powder. Cook for about 7 minutes, stirring occasionally, until the chicken is browned and reaches an internal temperature of 165°F (74°C).
1 tbsp (15 ml) olive oil, 1 lb (454 g) boneless, skinless chicken breasts or thighs, 1 tsp (3 g) Italian seasoning, ½ tsp (3 g) kosher salt, ½ tsp (1 g) black pepper, ½ tsp (1 g) paprika, ¼ tsp (0.75 g) garlic powder
Reduce the heat to medium-low. Add the butter and minced garlic to the skillet and cook for about 1 minute, stirring frequently, until the garlic is fragrant. Keep the heat moderate so the garlic softens without browning.
2 tbsps (28 g) butter, 6 cloves garlic
Pour in the chicken broth and scrape the bottom of the skillet to release the browned bits from cooking the chicken. Bring the broth to a simmer and cook for 2 to 3 minutes to reduce slightly.
1 cup (240 ml) low-sodium chicken broth
Add the drained penne to the skillet and toss it with the chicken and broth.
Reduce the heat to low. Pour in the room-temperature heavy cream and add the Parmesan. Stir until the cheese has melted and the sauce is smooth. Avoid boiling the sauce after adding the cream and Parmesan, which can cause the dairy to separate.
1 cup (240 ml) heavy cream, ½ cup (~45 g) freshly grated Parmesan cheese
Continue cooking over low heat for 1 to 2 minutes, tossing the pasta frequently, until the sauce has thickened enough to coat the penne. Remove from the heat. The sauce will continue to thicken slightly as it stands.
Sprinkle with chopped parsley and serve immediately.
2 tbsps (8 g) chopped fresh parsley