Hard boil the eggs by placing them in a pot of cold water and bringing it to a boil.
Peel the hard-boiled eggs and chop them into small pieces.
Cut the avocado in half, remove the pit, and scoop the flesh into a bowl.
Add the chopped eggs, Greek yogurt, lemon juice, cilantro, salt, pepper, cherry tomatoes, and red onion to the bowl with the avocado.
Gently mix until all ingredients are combined, adjusting seasonings as necessary.
Serve immediately or refrigerate for up to an hour before serving for chilled flavor.
