Creating Spicy Chicken Pasta is a simple process when you follow these steps:

1. Cook the Pasta: In a large pot, boil salted water and cook the penne pasta according to package instructions. Drain and set aside.
2. Prepare the Chicken: While the pasta cooks, season the chicken breasts with salt and pepper. In a large skillet, heat olive oil over medium heat.
3. Sauté the Chicken: Add the chicken breasts to the skillet and cook for about 5-7 minutes on each side, or until golden brown and cooked through. Remove from the skillet and let rest before slicing.
4. Sauté Vegetables: In the same skillet, add diced onion and sliced bell pepper. Sauté for 3-4 minutes until softened. Add minced garlic and cook for another minute until fragrant.
5. Make the Sauce: Stir in the diced tomatoes, tomato paste, red pepper flakes, and smoked paprika. Allow to simmer for about 5 minutes.
6. Combine Ingredients: Slice the cooked chicken and add it back to the skillet along with the cooked pasta. Toss everything together until well combined and heated through.
7. Adjust Seasoning: Taste and adjust the seasoning with additional salt, pepper, or red pepper flakes if desired.
8. Serve: Remove from heat and garnish with fresh basil or parsley. Serve hot with grated Parmesan cheese on top.

These easy-to-follow steps ensure that your Spicy Chicken Pasta turns out delicious every time!