Remove yolks from halved eggs and place in a medium bowl. Mash the yolks with a fork and then add the mayonnaise, cheddar cheese, sour cream, chives, and 1 1/2 teaspoons of taco seasoning. Mix together well.
Place mixture in a resealable plastic bag, snip off the corner, and pipe into the cooked egg whites.
Top with finely diced avocado and chives. Using a strainer add the remaining 1/2 teaspoon of taco seasoning and very lightly dust the eggs with it. Refrigerate until serving.
You can use green onions instead of chives but chives are much more delicate - perfect for little deviled eggs. 3.2.2885