Preheat oven to 350 ° F.
On a rimmed baking sheet, toast pepitas and pecans 6 – 8 minutes. Watch ‘em closely. They like to char to a crisp.
Dice: celery, peppers, onion, apple, and pecans. Chop dill. Half and seed avocados.
Take all the ingredients EXCEPT avocados and throw them into a large bowl: celery, peppers, dill, pepitas, onion, pecans, apple, lemon juice, mayo, olive oil, and salmon.
Mix it all up. Add more mayo or olive oil if the mixture is too dry for your liking.
Serve: Place ½ avocado on each plate and add ¼ of the contents of the bowl to each plate. Add salt and pepper, to taste.