Step 1: Prepare the Pasta

1. Cook pasta according to package directions until al dente
2. Reserve 1 cup pasta water before draining
3. Set pasta aside

Step 2: Cook the Chicken

1. Season chicken pieces with salt and pepper
2. Heat olive oil in a large skillet over medium-high heat
3. Add chicken and cook for 6-7 minutes until golden brown and cooked through
4. Remove chicken and set aside

Step 3: Create the Sauce Base

1. In the same skillet, add butter and let it melt
2. Add minced onion and garlic, sauté for 2-3 minutes until fragrant
3. Stir in tomato paste and cook for 1 minute
4. Pour in white wine to deglaze the pan, scraping up any browned bits

Step 4: Build the Creamy Sauce

1. Add chicken broth and bring to a simmer
2. Slowly pour in heavy cream while stirring
3. Add sun-dried tomatoes, Italian seasoning, and red pepper flakes
4. Let the sauce simmer for 3-4 minutes until slightly thickened
5. Stir in Parmesan cheese until melted

Step 5: Combine Everything

1. Return cooked chicken to the skillet
2. Add the cooked pasta and toss to combine
3. If needed, add reserved pasta water to achieve desired consistency
4. Taste and adjust seasoning with salt and pepper

Step 6: Serve

1. Garnish with fresh basil and additional Parmesan
2. Serve immediately while hot