1. Cook and drain spaghetti as directed on package.
2. In 10-inch nonstick skillet, heat 1 tablespoon vegetable oil over medium-high heat. Add chicken thighs; sprinkle with 1/2 teaspoon salt and 1/2 teaspoon pepper. Cook chicken 3 to 4 minutes on each side. Remove chicken from pan; set aside. Reduce heat to medium.
3. In same skillet, add mushrooms and garlic. Cover and cook about 5 minutes or until vegetables are tender. Return chicken to skillet; pour cooking sauce over chicken. Sprinkle with basil; simmer about 10 minutes or until juice of chicken is clear when center of thickest part is cut (at least 165°F). Serve over spaghetti.