In 12-inch nonstick skillet, combine broth, carrots, celery and parsley flakes. Bring to a boil. Reduce heat to medium-low; cover and cook 3 minutes.
Uncover skillet; return to a boil. Stir in rice. Top with orange roughy fillets; sprinkle with garlic-pepper blend. Reduce heat to medium-low; cover and cook 10 to 15 minutes or until liquid is absorbed and center of fish flakes easily with fork. Garnish with fresh parsley sprigs if desired.