In a large bowl, combine sliced zucchinis, shredded chicken, cherry tomatoes, and mozzarella cheese. Stir to combine.
In a small bowl, mix olive oil, garlic, oregano, salt, and pepper. Whisk well.
Pour the olive oil mixture over the zucchini mixture. Stir until the oil coats everything well.
Spread the mixture evenly in a greased baking dish.
Sprinkle feta cheese over the top.
Bake in the oven for about 30 minutes or until the zucchini is tender and cheese is bubbly.
Serve warm and enjoy!
Notes
For an added kick, you can broil the casserole for a couple of minutes to get a perfectly golden cheese topping. Store leftovers in an airtight container for up to 3 days in the fridge.