Place a pot on the stove over medium-high heat and bring water to a boil. Once the water is boiling, carefully add the eggs and cook for 8-10 minutes.
Remove the eggs from the boiling water and transfer them to a bowl of ice water to cool.
Meanwhile, peel and mash the avocado in a separate bowl. Cut the boiled eggs in half lengthwise and scoop the yolks into the bowl with the mashed avocado.
Add sour cream, lemon juice, salt, and pepper, then mix everything until smooth and well combined.
Rinse the egg whites to remove any residue and pat them dry gently.
Transfer the avocado and yolk mixture into a piping bag and carefully pipe it back into the egg whites.
If desired, garnish with paprika powder and parsley for an extra touch of flavor and presentation.