Step 1

Lay your chicken breasts flat on the chopping board and pat dry with kitchen paper.2 chicken breasts

Step 2

Use a large sharp knife, keeping the knife parallel to the chopping board cut sideways through the breast.

Step 3

Repeat with the second chicken breast.

Step 4

Mix the olive oil, Greek seasoning, chopped garlic, and salt in a non-metallic bowl.¼ cup olive oil2 tbsp Greek seasoning4 cloves garlic1 tsp salt

Step 5

Add the chicken breast fillets and let them marinate for at least 30 minutes and up to 48 hours.

Step 6

Remember to remove the chicken from the refrigerator for at least 30 minutes before cooking.

Step 7

Preheat the oven to 450°F/230ºC

Step 8

Place the chicken in a cast iron or metal baking ovenproof dish (see note and pour over the marinade.

Step 9

Bake the chicken for 8 minutes.

Step 10

Remove the chicken from the oven, and add the halved tomato, olives, and sliced onion. Return the dish to the oven for 2 minutes.1 cup cherry tomatoes⅓ cup kalamata olives½ red onion

Step 11

Remove from the oven and add the feta and oregano, then serve.½ cup feta cheese1 tbsp fresh oregano leaves