Preheat your oven to 400°F (200°C).
Cut the chicken breast into 1-inch cubes and slice the zucchini into half-moons.
In a large baking dish, combine the chicken, zucchini, and whole cherry tomatoes.
Add the minced garlic, dried oregano, sea salt, black pepper, and extra virgin olive oil to the dish, tossing thoroughly to coat all ingredients.
Clear a small space in the center of the vegetables and place the block of feta cheese there.
Bake for 20 to 25 minutes until the chicken is fully cooked and the tomatoes have begun to burst.
Remove from the oven and use a fork to mash the softened feta, stirring it into the surrounding juices and vegetables to create a creamy coating.
Top with freshly chopped parsley and serve immediately.