1. Lightly sprinkle both sides of chicken with salt and pepper.
2. In a large skillet over medium heat, heat 1 tablespoon oil until hot; cook chicken 10 to 12 minutes, or until no longer pink in center, turning once.
3. Meanwhile, in a medium skillet over medium-high heat, heat remaining 1 tablespoon oil; cook onions 3 to 4 minutes, or until tender. Add tomatoes, olives, garlic, and oregano and cook 6 to 8 minutes, or until tomatoes start to break down. Stir in lemon juice. Serve tomato mixture over chicken and top with feta cheese.
Recipe and Image from the Mr. Food Test Kitchen
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