Heat oven to 350�.
Wrap tortillas in foil. Heat in oven for 10-15 minutes or until warm.
Coat large nonstick skillet with cooking spray. Place skillet over medium-high heat. Add chicken, onion and garlic; saute until chicken is no longer pink in center, 4-6 minutes. Stir in Worcestershire sauce, salt and pepper.
Divide chicken mixture among tortillas. Top each with lettuce and tomato. Drizzle each with 2-3 tablespoon dressing. Roll up the tortillas and serve.