Bring a large pot of salted water to a boil. Add your choice of 8 oz pasta and cook according to package directions until al dente. Drain the pasta, reserving about 1/2 cup of the pasta water for later, and set aside.
While the pasta cooks, heat 2 tablespoons of olive oil in a large skillet over medium-high heat. Season the diced chicken breast with 1 teaspoon garlic powder, salt, and pepper. Add the chicken to the skillet and cook, stirring occasionally, until golden brown and cooked through, about 6-8 minutes. Remove the chicken and set aside.
In the same skillet, add the chopped sun-dried tomatoes and sauté for 2 minutes to release their flavor. Pour in 1 cup of heavy cream, stirring to combine with the tomatoes. Bring the mixture to a gentle simmer.
Stir in 1/2 cup grated Parmesan cheese and 1 teaspoon Italian seasoning. Continue to simmer until the sauce thickens slightly, about 3-4 minutes. If the sauce becomes too thick, add reserved pasta water a little at a time to reach your desired consistency.
Return the cooked chicken to the skillet with the creamy sauce. Add the drained pasta and toss gently to coat every piece with the rich sauce. Cook together for a minute to marry the flavors.
Remove from heat and garnish with fresh basil leaves. Serve immediately, enjoying the comforting warmth and vibrant flavors of this Creamy Sun-Dried Tomato Chicken Pasta.