Preheat the oven to 350 degrees F. Line a rimmed baking sheet with aluminum foil (for easy clean-up).
In small frying pan over medium heat, combine the butter, garlic, salt, paprika, lemon pepper, and Old Bay seasoning. Cook until butter begins to brown slightly, garlic turns golden, and seasonings are fragrant, about 5 minutes. Remove from heat.
Brush a little of the herb-butter mixture in the bottom of the aluminum foil-lined baking sheet, then place fish fillets on the buttered area. Brush top of each fillet with an equal portion of the butter mixture.
Bake for 12 to 15 minutes, until fish is opaque, cooked through, and flakes easily with a fork.