Step 1

Place Greek yogurt, avocado, Dijon, and lemon juice in a large bowl and mix to combine, mashing the avocado as you stir. Avocado should be mashed so it is creamy enough to blend into the dressing while some chunks remain for texture.

Step 2

Add chicken, celery, onion, cilantro, and seasonings to the bowl and mix to evenly coat with the dressing.

Step 3

Serve immediately.