In a medium bowl, blend the cooked chicken breast chunks with mayonnaise, white miso paste, rice vinegar, chopped ginger, soy sauce, orange juice, and honey. Mix until completely combined.
In a separate bowl mix together the wonton strips, almonds, and chow mien noodles then combine with the chicken mixture. Stir until ingredients are evenly distributed.
Add the lettuce to the chicken mixture and stir until all ingredients are mixed well together.
Drizzle with sesame oil and mix until everything is coated evenly.
Serve your homemade Costco Chinese Chicken Salad immediately.