Cook the Pasta: Boil a large pot of salted water and cook penne pasta until al dente. Drain and set aside.
Prepare the Chicken: Heat olive oil in a large skillet over medium-high heat. Cook the chicken until browned and cooked through, about 5-7 minutes. Remove from the skillet and set aside.
Make the Sauce: In the same skillet, add garlic and cook for 1 minute. Stir in tomato paste, red chile flakes, and chicken broth. Simmer for 2 minutes.
Combine Ingredients: Reduce heat and add heavy cream, Parmesan cheese, oregano, and black pepper. Stir well until the sauce is smooth. Add the cooked chicken and let simmer for 3-4 minutes.
Toss with Pasta: Add the cooked penne pasta and stir until well coated. If using spinach, add it now and let it wilt.
Serve & Garnish: Remove from heat, let rest for 5 minutes, and garnish with fresh basil before serving.
