Heat oil in large nonstick skillet on medium-high heat. Add chicken, onion and mushrooms. Sprinkle with 1 teaspoon of the Worcestershire Pepper, garlic salt and Italian seasoning. Cook and stir 5 to 7 minutes or until chicken is lightly browned.
Stir in cream and remaining 1/2 teaspoon Worcestershire Pepper; bring to boil. Reduce heat to low; simmer 3 minutes or until chicken is cooked through and sauce is slightly thickened.