Using a hand mixer, to a large mixing bowl add softened cream cheese, Greek yogurt, cheddar cheese, green onions, Worcestershire sauce and garlic powder. Beat until well combined.
Fold in 1/4 cup of everything bagel seasoning spice, until well combined.
Using a spatula, shape the cream cheese mixture into a rough ball and place it in the center of a sheet of plastic wrap. Bring the edges of the plastic wrap up and around the mixture, twisting to seal and form a smooth, compact ball. Place the wrapped cheese ball in a bowl and refrigerate for at least 2 hours, up to overnight, until firm.
When ready to serve: To a shallow plate or bowl, add remaining 1/4 cup everything bagel seasoning and extra green onions (or chives).
Remove chilled cheese ball from plastic wrap and roll ball into mixture to coat with topping.