Cook orzo according to package directions. Meanwhile, in a large skillet, heat oil over medium heat. Add garlic; cook and stir 1 minute. Add tomatoes and lemon juice. Bring to a boil. Stir in shrimp. Reduce heat; simmer, uncovered, until shrimp turn pink, 4-5 minutes., Drain orzo. Add orzo, cilantro and pepper to shrimp mixture; heat through. Sprinkle with feta cheese.