Season and Cook the Chicken: Season chicken with Italian seasoning, garlic powder, salt, and black pepper. Cook in a skillet over medium-high heat for 6-7 minutes per side until golden and cooked through. Remove and set aside.
Boil Pasta and Broccoli: Cook pasta in salted water according to package instructions, adding broccoli during the last 3 minutes. Drain and set aside.
Make the Garlic Parmesan Sauce: In the same skillet, sauté garlic until fragrant. Stir in chicken broth and heavy cream, then add cubed cream cheese. Whisk until smooth.
Combine Everything: Stir in Parmesan cheese, then add the cooked pasta, broccoli, and sliced chicken. Toss everything together until well coated in the creamy sauce.
Serve and Garnish: Sprinkle with fresh parsley and extra Parmesan. Serve warm and enjoy!