Season the chicken pieces generously with salt, pepper, and 1 tablespoon of the Cajun seasoning.
Heat olive oil and butter in a large skillet over medium-high heat. Add the chicken and cook until browned and cooked through, about 5-7 minutes. Remove chicken and set aside.
Reduce heat to medium. Add the chopped onion to the same skillet and cook until softened, about 3 minutes.
Add the 8 cloves of minced garlic, garlic powder, smoked paprika, and remaining 1 tablespoon of Cajun seasoning to the skillet. Cook for 1 minute until fragrant.
If using wine, pour it in and scrape up any browned bits from the bottom of the pan. Let it reduce by half.
Stir in the chicken broth and heavy cream. Bring the mixture to a gentle simmer.
Whisk in the cream cheese cubes until the sauce is smooth and fully melted. Stir in the Italian herbs.
Cook the pasta according to package directions until al dente. Reserve 1 cup of the starchy pasta water before draining.
Add the drained pasta and the cooked chicken back into the sauce. Toss to coat everything evenly.
Stir in the Parmesan cheese. If the sauce is too thick, add reserved pasta water, one splash at a time, until you reach your desired creamy consistency.