Mix dry spices together in a bowl.
Add melted oil (optional) and orange juice until you get a paste-like consistency similar to thick salad dressing.
Optional: Cut salmon filets into 3” (8cm) wide slices to make flipping easier.
Place salmon skin-side down and brush marinade paste over salmon meat. Place in fridge and marinate for 30 minutes.
Grill Method: Preheat grill with the lid closed for 10 minutes. We’re shooting for 375°F – 400°F (or 190° – 204°C).
Coat grill with oil to prevent sticking. I recommend a non-flammable grilling spray, or use some tongs to coat the grates with a paper towel soaked in oil.
Place salmon skin-side down on the grill. Cook for 3 – 4 minutes with the lid closed.
Open lid and flip salmon. This is the part where the flavorful crust will develop. Cook for 3 – 4 minutes.
Remove from grill and serve with your choice of sides. (Optional): You can also garnish the salmon with orange slices for presentation.