Pat salmon fillets dry with paper towels. Rub both sides with olive oil and coat generously with Cajun seasoning. Sprinkle lightly with salt and pepper if needed.
In a small bowl, mix the softened butter, honey, and lemon juice until combined. Set aside.
Heat a large skillet over medium-high heat. Add a drizzle of oil. Place the salmon fillets skin-side down and cook for about 4 minutes until a crispy crust forms.
Carefully flip the salmon. Spoon the honey butter over the fillets as they cook for another 3–4 minutes, basting frequently to create a sticky, golden glaze.
Remove from the pan, garnish with chopped parsley or green onions, and serve hot with your favorite sides.