In a mixing bowl, combine the chopped salmon, bread crumbs, beaten egg, dill, green onions, lemon juice, garlic powder, salt, and black pepper. Mix until well combined.

Form the mixture into 4 equal-sized patties.

Preheat the grill to medium-high heat.

Place the salmon patties on the grill and cook for about 5 minutes on each side, or until cooked through and golden brown.

Place each cooked salmon patty on a toasted bun.

Top with cheese, lettuce, tomato, and tartar sauce as desired.