Cook the pasta according to package directions until al dente. Drain and set aside.

Toss the chicken strips with the Cajun seasoning until evenly coated.

Heat olive oil in a large skillet over medium-high heat. Add the chicken and cook until browned and cooked through. Remove chicken from the skillet.

In the same skillet, add the tomato paste and onion. Sauté until softened, then add the minced garlic and cook for another minute.

Pour in the heavy cream and bring to a gentle simmer. Stir in the Parmesan cheese until the sauce thickens slightly.

Return the chicken to the skillet and add the cooked pasta. Toss everything together until well coated and heated through.