Place eggs in a medium saucepan. Cover with cold water with 1-inch of water above the eggs. Bring water to a boil, turn off the heat, cover and let the eggs sit in the saucepan for 13 minutes. Drain, add some ice cubes to the eggs in the pan and fill them with cold water. Peel eggs one by one and refrigerate them to cool down.
Make the filling:
Once hard-boiled eggs have fully cooled, halve lengthwise and carefully scoop the egg yolks into a bowl.
With a fork, mash the egg yolks. Add mustard, tabasco (if using), salt, pepper, and chives, if using. Add the Greek yogurt (or other mayo replacement) and stir to combine all ingredients with a fork.
Fill them:
Fill each egg white half with about 1 to 2 teaspoons of the mixture and dust the tops with paprika.