1. Cook orzo according to package directions, omitting salt and fat. Drain. Place orzo in a medium bowl. Stir in parley and 1/4 teaspoons salt; cover and keep warm.
2. While orzo cooks, melt 1 T. butter in a large non stick skillet over medium-high heat. Sprinkle shrimp with remaining 1/4 teaspoons salt. Add half of shrimp to pan; saute 2 minutes or until almost done. Transfer shirmp to a plate. Melt 1 tsp butter in pan. Add remaining shrimp to pan; saute 2 minutes or until almost done. Tranfer to plate.
3. Melt remaining 1 T. butter in pan. Add garlic to pan; cook 30 seconds, stirring constantly. Stir in shrimp, juice, and pepper; cook 1 minute or until shrimp are done.
4. Put orzo onto a platter, shrimp and sauce on top.