Mix the Chicken Salad: In a large bowl, combine the shredded chicken, Greek yogurt, mayonnaise, chopped onion, and lemon juice. Mix well until everything is evenly coated and creamy.
Season & Add Avocado: Sprinkle in salt and pepper to taste. Gently fold in the diced avocado, being careful not to mash it completely to maintain those lovely chunks.
Assemble the Wraps: Spoon the chicken salad mixture into the crisp lettuce leaves. Roll them up like a burrito or simply fold over the sides—however you prefer to enjoy them!
Serve Immediately: Enjoy your refreshing Avocado Chicken Salad Lettuce Wraps right away, and bask in the compliments from your guests!