In a bowl mix together 1 cup of plain yogurt
& 2 large garlic cloves, (smashed). Add seasonings (salt, pepper, garlic powder, oregano).
Add 4 boneless, skinless chicken breast halves (you can pound them to thin them out if you want).
Cover and refrigerate at least 30 minutes or until your ready for dinner.
Preheat your oven broiler. Line a baking pan with foil & place chicken on foil.
Broil 6 minutes, turn, brush with marinade & broil 6 more minutes.
Sprinkle feta cheese on top of chicken & broil 5 minutes until topping is crisp & brown.