Start by cooking the penne pasta according to package instructions until al dente. Drain and set aside.
While the pasta cooks, season the chicken breasts with salt and black pepper on both sides.
In a large skillet, heat the olive oil over medium-high heat. Add the chicken breasts and cook for about 6-7 minutes on each side or until cooked through and golden brown. Remove the chicken from the skillet and set aside.
In the same skillet, add the minced garlic and sauté for about 30 seconds until fragrant. Add the cherry tomatoes and cook for 2-3 minutes until they start to soften.
Pour in the heavy cream and stir in the Parmesan cheese and Italian seasoning. Let the sauce simmer for about 3-4 minutes until it thickens slightly.
Slice the cooked chicken and return it to the skillet, stirring to coat it in the creamy sauce. Add the cooked penne pasta and toss everything together until well combined.
Serve hot, garnished with fresh basil leaves.