Combine shrimp, 1 tablespoon olive oil, and next 3 ingredients. Let stand 10 minutes.
Place pita bread on a baking sheet. Brush with remaining 1 tablespoon oil; sprinkle evenly with feta and olives. Arrange shrimp mixture over pita bread, and sprinkle with mozzarella.
Bake at 500º for 6 to 7 minutes or until cheese melts.
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