Cook the Tortellini: Bring a large pot of salted water to a boil. Add the cheese tortellini and cook according to the package instructions until al dente. Drain and set aside.
Sauté Chicken: In a large skillet over medium heat, add olive oil. Season the diced chicken breast with Cajun seasoning, salt, and pepper. Add the chicken to the skillet and cook until golden brown and cooked through, about 6-7 minutes. Remove the chicken from the skillet and set aside.
Sauté Vegetables: In the same skillet, add the sliced bell pepper and onion. Sauté for about 4-5 minutes until the vegetables are tender. Add the minced garlic and sauté for an additional 1-2 minutes until fragrant.
Make Sauce: Pour in the heavy cream and diced tomatoes, stirring to combine. Bring the mixture to a simmer. Allow it to cook for about 5 minutes until slightly thickened.
Combine: Return the cooked chicken to the skillet, then gently fold in the drained tortellini. Sprinkle in grated Parmesan cheese and stir until everything is well coated in the sauce. If the sauce is too thick, add a splash of water or chicken broth to reach desired consistency.
Serve: Taste and adjust seasoning with more salt, pepper, or Cajun seasoning, as desired.
Notes
Serve garnished with fresh parsley and extra Parmesan cheese.