Starting at the top, with a very sharp knife, cut down into each avocado until you hit the pit. Cut completely around the avocado, top to bottom, touching the pit the entire time.
Pull the two halves of the avocado apart and remove the pit with a spoon.
Use the spoon to scoop the avocado out of the skin.
Chop into bite-sized pieces.
In a large bowl, combine all prepared ingredients. Mix well.
Store in a tightly covered container, in the refrigerator, for at least 2 hours or until ready to serve, to allow flavors to blend.
Serve with tortilla chips.