Cook the penne pasta according to package instructions until al dente. Drain and set aside.
In a large skillet, heat the olive oil over medium heat. Add the chicken breasts and season with Italian seasoning, salt, and black pepper. Cook for about 6-7 minutes on each side, or until the chicken is cooked through. Remove from the skillet and let it rest for a few minutes before slicing.
In the same skillet, add the minced garlic and sauté for about 1 minute until fragrant.
Pour in the chicken broth and heavy cream, stirring to combine. Bring to a simmer.
Stir in the grated Parmesan cheese until melted and smooth. Add the frozen peas and cooked pasta, mixing until well combined.
Slice the cooked chicken and place it on top of the pasta. Garnish with chopped parsley if desired. Serve warm.