Pat salmon dry with a paper towel to remove any excess moisture.
Sprinkle salmon with salt and set aside.
Melt the butter and stir in the garlic powder.
Preheat the grill to medium heat.
On a large sheet of heavy-duty aluminum foil, place a few slices of lemon and a sprig of herbs.
Top with fish, butter, herbs, and lemon slices.
Drizzle with garlic butter.
Wrap salmon in foil, bringing the long sides of the foil together and rolling up the edges to seal.
Grill salmon for 7-8 minutes, uncover and check to see if fish flakes easily with a fork.
If needed, grill for a few more minutes uncovered until fish is done. Fish can take up to 12 minutes depending on the thickness of the filet. Be careful not to overcook the fish or it can get dry. I always check at 8-10 minutes for doneness.
I used 2 large 10 oz filets for this recipe, so slice into four individual portions before serving.