1. Cut chicken into bite-sized pieces and pat dry. Season with Cajun seasoning, salt, and pepper.

2. Heat butter and olive oil in a large skillet over medium-high heat. Add chicken and sear until golden and cooked through. Remove from skillet and set aside.

3. Bring a large pot of salted water to a boil. Cook rotini until al dente. Reserve 1/2 cup pasta water, then drain.

4. In the same skillet, reduce heat to medium. Add remaining butter and minced garlic. Sauté until fragrant.

5. Pour in heavy cream, paprika, chili flakes, and more Cajun seasoning. Simmer for 4-5 minutes.

6. Stir in Parmesan until smooth and creamy. Add pasta water a little at a time if sauce is too thick.

7. Toss in cooked pasta and chicken bites. Let everything warm through for 2-3 minutes.

8. Garnish with fresh parsley and serve immediately.