Pat the scallops dry thoroughly with paper towels to remove excess moisture, which is key for a good sear.
Season each scallop generously with sea salt and freshly ground black pepper, ensuring all sides are coated evenly.
Place a heavy skillet over medium-high heat and add the high-smoke-point oil. Wait until the oil shimmers and starts to smoke slightly.
Carefully add the scallops to the hot pan, making sure to leave space between each to prevent overcrowding. Sear without moving for 2-3 minutes until the edges turn a deep golden brown and caramelized.
Use tongs to flip each scallop gently, then add a tablespoon of butter and a sprig of herbs to the pan. Tilt the pan slightly and spoon the melted butter over the scallops for about 30 seconds, enhancing flavor and moisture.
Cook the scallops for another 1-2 minutes until they are opaque through the center but still tender, with a beautifully crisp crust.
Remove the scallops from the pan and transfer to a serving plate. Squeeze fresh lemon juice over them and zest the lemon for brightness.
Finish with an additional sprinkle of herbs if desired, and serve immediately while the crust is crispy and the interior tender.