01 - Bring a large pot of salted water to a boil. Cook the penne or rigatoni according to package instructions until al dente. Reserve 1/2 cup of pasta water, then drain and set pasta aside.
02 - Slice each chicken breast in half horizontally to create 4 thin cutlets. Season both sides with salt, black pepper, and Italian seasoning.
03 - Heat olive oil in a large skillet over medium-high heat. Add the chicken cutlets and cook for 4 to 5 minutes per side until golden brown and just cooked through. Remove the chicken to a plate, cover with foil, and allow to rest.
04 - Reduce heat to medium and add unsalted butter to the same skillet. Once melted, add minced garlic and sauté for 1 minute until aromatic. Add sun-dried tomatoes and cook for an additional 2 minutes, stirring frequently.
05 - Pour in heavy cream and chicken broth, stirring to combine. Allow the mixture to come to a gentle simmer.
06 - Stir in the grated parmesan cheese, red pepper flakes (if using), and dried oregano. Continue stirring until the cheese melts and the sauce thickens slightly, about 3 minutes. Season with salt and freshly ground black pepper to taste.
07 - Slice the rested chicken into thin strips. Add the cooked pasta and sliced chicken to the sauce in the skillet. Toss to evenly coat, adding reserved pasta water gradually if needed to adjust sauce consistency.
08 - Plate the pasta with chicken and sauce immediately. Garnish with chopped fresh basil and extra parmesan cheese before serving.