Preheat the oven to 375 F.
Season the chicken breasts with salt and pepper.
In a large, oven safe skillet, heat the olive oil over medium-high heat.
Add the chicken breasts and cook for roughly 5 minutes on one side to brown it. Flip and brown the other side for an additional 3-4 minutes.
Remove the chicken breasts to a plate.
Reduce the temperature to medium.
Add the minced garlic, Italian seasoning, and red pepper flakes.
Cook for 1-2 minutes or until fragrant.
Deglaze the pan with the chicken broth, gently scraping the bottom of the skillet to remove the delicious brown bits.
Stir in the heavy cream, sun-dried tomatoes, and parmesan cheese.
Bring to a simmer. Place the chicken back in the skillet and any juices accumulated on the plate.
Spoon the sauce over the chicken.
Place the skillet in the oven and bake for 15-20 minutes or until the internal temperature of the chicken is 165F.
While the chicken is baking, cook the tortellini according to the package directions. Drain and set aside until chicken is done.
When the chicken is ready, remove from the oven.
Remove the chicken breasts to a cutting board and slice the chicken or dice into bite-sized pieces.
Stir the tortellini into the sauce in the skillet.
Add the chicken and mix to combine. Serve in individual bowls.
Alternatively, you can place the pasta and sauce in a large serving bowl and top with the sliced chicken.
Garnish with sliced fresh basil or chopped fresh parsley.