Pre-heat oven to 400° F.
Prepare shrimp by putting them into a mixing bowl with 2 tablespoon olive oil, salt, black pepper and crushed red pepper flakes. Toss shrimp to coat and let sit 30 minutes.
Add 2 tablespoons of olive oil in a medium skillet over medium-high heat. Add onion and sweat until translucent; add garlic and stir 20-30 seconds, making sure not to burn. Allow to cool.
Combine marinated shrimp, sautéed onion mixture, tomatoes, oregano and olives to baking dish. Break up feta into fat chunks and spread over shrimp. Bake 12-15 minutes, until shrimp are a medium pinkish color and cheese is a bit browned.
Combine cooked orzo with 2 tablespoons olive oil, lemon juice, fresh mint and parsley. Add to the baking dish and gently mix with the shrimp and remaining ingredients. Serve immediately. Enjoy!