Bring a large pot of salted water to a boil. Add the penne pasta and cook according to package instructions until al dente. Drain well and set aside. Be sure not to overcook, as the pasta will continue baking in the oven.
In a large skillet over medium heat, warm the olive oil. Add the minced garlic and sauté for about 1-2 minutes until fragrant but not browned. Pour in the heavy cream, stirring constantly. Bring it to a gentle simmer and then stir in the grated Parmesan cheese, Italian seasoning, salt, and black pepper. Stir until the cheese melts and the sauce thickens slightly.
Add the cooked penne pasta and shredded chicken to the skillet with the garlic parmesan sauce. Toss gently to coat everything evenly with the creamy sauce.
Transfer the creamy pasta mixture into a greased 9x13-inch baking dish. Sprinkle the shredded mozzarella cheese evenly over the top.
In a small bowl, combine the breadcrumbs with 2 tablespoons of olive oil. Mix until the breadcrumbs are evenly coated. Sprinkle this breadcrumb mixture over the mozzarella layer. Bake uncovered in a preheated oven at 375°F (190°C) for 20-25 minutes, or until the top is golden and bubbly.
Remove from the oven and let it cool slightly before serving. Garnish with fresh chopped parsley for a bright, fresh touch. Serve warm and enjoy!