To make the pasta

• Bring a large pot of water to a boil. Cook pasta according to the package instructions until al dente. Drain, cover and keep warm.
• Season chicken breasts all over with 1 ½ tablespoons Cajun seasoning.
• In a large skillet, heat 1 tablespoon oil over medium-high heat. Once hot, add the chicken and sear on both sides. Turn heat down to low and sauté until cooked through and center reaches 165°F on a food thermometer. Transfer to a cutting board to rest; cover to keep warm.
• In the same skillet over medium heat, sauté the butter and garlic for 1 minute or until the garlic is fragrant. Add the diced tomatoes, whipping cream, Parmesan cheese and remaining Cajun seasoning. Bring to a simmer. Season with salt and pepper, if desired.
• Add the cooked pasta to the sauce and toss until combined. 
• Slice chicken into thin strips.
• Serve pasta with sliced chicken on top and garnish with a sprinkle of parsley, if desired.