01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it with olive oil.
02 - In a small bowl, combine the smoked paprika, garlic powder, onion powder, dried thyme, dried oregano, cayenne pepper, black pepper, and salt. Mix until evenly blended.
03 - Pat the salmon fillets dry with paper towels. Brush both sides with olive oil. Sprinkle the Cajun spice blend generously over the tops of the fillets, pressing gently so the seasoning adheres firmly.
04 - Place the seasoned salmon fillets on the prepared baking sheet, skin side down if applicable, spacing them evenly apart.
05 - Bake for 12–15 minutes, or until the salmon flakes easily with a fork and is opaque throughout.
06 - Remove from the oven. Squeeze fresh lemon juice over the top and garnish with chopped parsley. Serve immediately.