Preheat oven to 350 F and line a baking sheet with parchment paper
Rub the chicken with avocado oil and season with salt
Bake the chicken in the oven for 40-45 minutes or until internal temperature reaches 165-170 F
Allow the chicken to rest and cool and chop into cubes
Combine the chicken, apples, grades, celery, and green onion in a large box and set aside
For the avocado "mayo", use a high speed blender to blend the avocado, avocado oil, lemon juice, salt and pepper
Pour the avocado mayo in with the salad mixture and stir well to combine
To assemble the salad line 2-3 bowls with butter lettuce (either chopped or whole) and spoon the chicken salad over top