Chicken Salad Over Avocado

This is a really simple meal, a good gluten free alternative to your average sandwich. My aunt made this for us at a family reunion campout this summer. I loved it!
I've tried to recreate it without a real recipe, so these are all just approximations. Sorry, I'm usually a recipe follower, and I hate improvising, but I was hungry, and wanted to have this. Couldn't get a hold of my aunt for the recipe...I still thought it was great :)

Chicken Salad Over Avocado

Cooked chicken meat, chopped/shredded (a breast works great here, as does canned chicken)
Grapes, halved
Celery, chopped
Walnuts, chopped
Mayonnaise
Salt and Pepper, to taste
Avocado, peeled, halved, pit removed

Mix all ingredients except avocado. Taste. Add anything that may be lacking. Serve over avocado. Corn tortilla chips work great as a side.
In the picture, I chopped up the avocado and ate it like a salad. But it also works great to use the avocado as a "shell" for the salad. Yum!