Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper or lightly grease it to prevent sticking.
In a small mixing bowl, whisk together paprika, cayenne pepper, garlic powder, onion powder, black pepper, and salt to create the spice blend.
Pat the salmon fillets dry with paper towels to help the spice adhere better.
Brush each salmon fillet lightly with olive oil to promote crispiness and help the spice mixture stick.
Generously sprinkle the spice mixture over all sides of each fillet, pressing lightly to ensure it coats evenly and forms a crust.
Place the coated fillets on the prepared baking sheet, skin-side down if applicable, leaving space between each piece.
Bake in the preheated oven for about 12-15 minutes, or until the edges are crispy and the fish is opaque and flakes easily with a fork.
Once out of the oven, let the salmon rest for a minute to allow the crust to set and juices to redistribute.
Serve the blackened salmon hot, with a side of your choice, and enjoy the smoky, spicy crust with tender, flaky flesh.