Preheat a skillet over medium heat and add olive oil.
Once hot, add chopped onions and sauté until they become translucent.
Add the chopped grilled chicken to the skillet.
Cook for about 3-5 minutes until heated through.
In a bowl, mix your beaten eggs with a pinch of salt and black pepper, then pour into the skillet.
Stir gently until the eggs are fully cooked.
Lay the tortillas flat and evenly distribute the egg and chicken mixture across each.
Add cherry tomatoes and both types of cheese on top.
Roll each tortilla tightly, pressing gently to hold the filling.
Serve with a side of salsa, sour cream, or guacamole for added flavor.