Preheat oven to 375°F.

In a large skillet, heat the olive oil over medium heat. Add the cherry tomatoes, salt, and pepper and cook until the tomatoes are softened, about 5 minutes.

Remove from heat and stir in the feta cheese and herbs.

In a large bowl, whisk together the eggs and milk until combined.

Add the tomato mixture to the egg mixture and stir to combine.

Pour the mixture into an oven-safe bowl and bake in the preheated oven for 25-30 minutes, or until the frittata is set and lightly golden brown.

Let cool for 5 minutes before serving.