Slice the eggs in half lengthwise. Remove yolks and place into a bowl.
Add mayo and sour cream to the egg yolks. Beat yolks with a hand mixer so they become light and fluffy. Add chives, salt, pepper, and onion powder
Transfer egg yolks to a plastic resealable bag, and push mixture into the tip. Cut the tip and gently pipe the egg yolk mixture into the egg halves.Transfer eggs to serving tray, and enjoy.