In a large pot, bring salted water to a boil and cook the pasta according to package instructions until al dente. Reserve 1/2 cup of pasta water, then drain and set aside.
While the pasta cooks, heat olive oil in a large skillet over medium-high heat. Season the chicken breasts with salt, pepper, and Italian seasoning. Add the chicken to the skillet and cook for about 6-7 minutes per side until golden brown and cooked through. Remove from skillet and let rest for a few minutes before slicing.
In the same skillet, add minced garlic and cook for about 1 minute until fragrant. Add the cherry tomatoes and sauté for another 3-4 minutes until they soften.
Lower the heat and pour in the heavy cream, stirring well. Gradually add the grated Parmesan cheese, mixing until fully incorporated and the sauce thickens (about 3-4 minutes). If the sauce becomes too thick, add a splash of reserved pasta water to reach desired consistency.
Add the drained pasta to the skillet and toss to coat in the creamy tomato sauce. Return the sliced chicken on top and garnish with fresh basil before serving.
Notes
Serve in large bowls, finished with a sprinkle of extra Parmesan cheese and a fresh basil leaf for a pop of color.