Melt the butter in a large skillet over medium heat.
Add the olive oil and chicken chunks.
Sprinkle the Cajun seasoning over the chicken.
Cook the chicken for about 5-7 minutes until it’s almost tender.
Stir frequently to avoid sticking.
Add the minced garlic and cook for another minute.
Pour the heavy cream into the skillet.
Stir well to combine all ingredients.
Let it simmer for a few minutes until it thickens slightly.
Add the grated Parmesan cheese and stir until the cheese is melted.
Seasons with salt and pepper to taste.
Cook the fettuccine pasta according to package instructions.
Drain and add it to the skillet.
Toss to coat the pasta evenly with the sauce.
Serve immediately, garnished with fresh parsley and cherry tomatoes if desired.