Gather the ingredients.

Bring a large pot of lightly salted water to a boil. Add pasta and cook until al dente, 8 to 10 minutes. Drain.

Meanwhile, cut chicken breast into strips; place in a plastic zipper bag and add Cajun seasoning. Shake well to coat all pieces.

Melt butter in a large skillet over medium heat. Add chicken and cook, stirring, until browned and almost cooked through, 5 to 7 minutes.

Add bell peppers, mushrooms, and green onion. Sauté for 2 to 3 minutes, scaping any brown bits from the bottom of the skillet.

Reduce the heat to medium low and stir in cream, basil, lemon pepper, salt, garlic powder, and black pepper. Add cooked pasta, tossing until heated through.

Sprinkle with Parmesan and serve.

Enjoy!