Step 1: Pat chicken pieces dry and toss with 1 tablespoon of olive oil and Cajun seasoning until evenly coated. Set aside.
Step 2: Cook pasta according to package directions in salted boiling water until al dente. Reserve 1/2 cup of pasta water before draining. Set drained pasta aside.
Step 3: While pasta cooks, heat the remaining 1 tablespoon of olive oil in a large skillet or Dutch oven over medium-high heat. Add the seasoned chicken and cook for 5-7 minutes, stirring occasionally, until browned and cooked through. Remove chicken from the skillet and set aside.
Step 4: Reduce heat to medium. Add minced garlic to the same skillet and sauté for 1 minute until fragrant. Do not burn.
Step 5: Pour in the chicken broth, scraping up any browned bits from the bottom of the skillet. Bring to a simmer and cook for 1-2 minutes until slightly reduced.
Step 6: Stir in the heavy cream and bring to a gentle simmer. Cook for 3-5 minutes, stirring occasionally, until the sauce thickens slightly.
Step 7: Remove from heat and stir in the grated Parmesan cheese until melted and smooth. If the sauce is too thick, add a splash of the reserved pasta water until it reaches your desired consistency.
Step 8: Return the cooked chicken to the skillet with the sauce. Add the drained pasta and toss gently to coat everything evenly in the creamy garlic parmesan sauce.
Step 9: Season with salt and black pepper to taste. Garnish with fresh chopped parsley and extra Parmesan cheese before serving immediately. Enjoy your creamy garlic parmesan pasta cajun chicken recipe!