Cajun Chicken and Linguine

Heat large covered saucepot of salted water to boiling over high heat. Add pasta; cook as label directs. Meanwhile, in nonstick 12-inch skillet, heat 2 teaspoons oil over medium-high heat until hot. Add chicken and Cajun seasoning and cook 3 to 5 minutes or until chicken just loses its pink color throughout, stirring frequently. Transfer chicken to plate. In same skillet, heat remaining 1 tablespoon oil over medium heat. Add onion and pepper and cook, covered, 8 to 10 minutes or until vegetables are tender and browned, stirring occasionally. Add mushrooms and salt and cook, covered, 5 minutes, stirring occasionally. Drain linguine, reserving 1/2 cup cooking water. Return linguine to saucepot. Add cooking water and cream; heat to boiling over medium heat. Stir in onion mixture; heat through. Remove saucepot from heat; add tomato, basil, and chicken with its juices on plate, and toss to mix well.