Cook linguine as directed, drain. Place chicken and cajun seasoning in bowl, stir to coat. Melt butter in lg skillet, over medium heat.
Saute chicken for 5 mins. Add green and red bell peppers, mushrooms and green onion. Cook, stirring for 3 mins. Reduce heat to med-low. Add cream, season w/ basil, lemon-pepper, salt, garlic powder and pepper.
Heat through. In lg bowl, toss pasta w/ sauce. Sprinkle w/ parmesan cheese.