Begin by patting the salmon fillets dry with paper towels. Season both sides generously with salt and black pepper.
In a non-stick skillet, heat the olive oil over medium-high heat. Once hot, add the salmon fillets, skin side down (if applicable).
Cook the salmon for about 4-5 minutes, or until the skin is crispy and the fillets release easily from the skillet.
Carefully flip the salmon fillets and cook for an additional 3-4 minutes, depending on the thickness, until cooked through (the center should be opaque).
While the salmon is cooking, prepare the orange sauce. In a small bowl, whisk together the orange zest, orange juice, honey, and soy sauce.
Once the salmon is cooked, pour the orange sauce into the skillet, allowing it to bubble and thicken slightly for about 1-2 minutes. Spoon the sauce over the salmon fillets.
Remove from heat, transfer the salmon to plates, and drizzle extra sauce on top. Garnish with chopped fresh parsley.