Bring broth to a boil in a Dutch oven. Stir in orzo; cook, uncovered, 9 to 11 minutes or until tender, stirring occasionally to prevent sticking. Drain.
Melt butter in same pan over medium heat. Add hot cooked orzo, lemon rind, and next 3 ingredients. Stir gently just until cheese melts. Serve hot. Garnish, if desired.
Fix it Faster: Use refrigerated shredded Parmesan cheese.