01 - Thoroughly pat salmon fillets dry with paper towels, focusing on the skin to remove moisture.
02 - Evenly season both sides of the salmon with kosher salt and freshly ground black pepper.
03 - Warm olive oil in a large nonstick or cast-iron skillet over medium-high heat until shimmering but not smoking.
04 - Gently place fillets in the skillet skin-side down, pressing lightly with a spatula for 10–20 seconds to prevent curling.
05 - Allow fillets to cook undisturbed for 5 to 7 minutes until skin is golden and crisp and flesh is mostly opaque.
06 - Turn salmon over and cook an additional 1 to 2 minutes until just cooked through and moist inside.
07 - Transfer fillets to plates skin-side up, finish with a squeeze of lemon juice and sprinkle with fresh herbs if desired.