Bring a large pot of salted water to a boil.

Cook the pasta according to package directions until al dente.

Drain and set aside.

Toss the chicken pieces with 1 tablespoon of Cajun seasoning.

In a large skillet, heat olive oil and butter over medium-high heat.

Add chicken and cook until browned and cooked through (about 5-7 minutes).

Remove chicken from the skillet and set aside.

In the same skillet, add the sliced bell peppers and sauté for 2-3 minutes.

Reduce heat to medium and pour in the heavy cream.

Add the remaining Cajun seasoning, garlic powder, basil, pepper, and salt.

Bring to a gentle simmer for 3-5 minutes until the sauce begins to thicken.

Stir in the Parmesan cheese until melted and smooth.

Add the cooked pasta and chicken back into the skillet.

Toss everything together until well coated in the sauce.

Garnish with green onions and parsley before serving.