01 - Preheat grill to medium-high heat, approximately 400°F.
02 - Combine melted butter, parsley, chives, and dill in a small bowl, mixing thoroughly.
03 - Mix parmesan cheese, ranch seasoning, garlic powder, and black pepper in a separate bowl until evenly combined.
04 - Brush each ear of corn generously with the herb butter mixture, ensuring even coverage.
05 - Place corn directly on grill grates. Grill for 12-15 minutes, rotating every 3-4 minutes, until kernels are tender and develop light char marks.
06 - Remove corn from grill. While still hot, sprinkle parmesan-ranch mixture evenly over each ear, pressing gently to adhere.
07 - Serve immediately, garnished with additional chopped herbs if desired.