Pat salmon fillets dry using paper towels or a clean tea towel. (If you're using frozen fillets, thaw them for 30 minutes in a sealed bag in a bowl of cold water.)
Season each piece of salmon with salt and pepper on both sides.
Heat a cast iron skillet or frying pan on medium heat. Add 1 tablespoon of butter and 1 tablespoon of olive oil. Cook each salmon fillet for about 3 - 4 minutes on each side, starting with the skin side facing down first. The salmon is done when it reaches 145°. Use a spatula to transfer the salmon to a serving tray.
Zest and juice one and juice lemon, reserving a few medallion slices to top the fish later. In a small pot, heat 1 tablespoon of butter, 2 tablespoons of honey, and the lemon juice (which should be about 2 tablespoons.) Heat until the butter is melted and the ingredients combine.
Pour the honey lemon glaze over the salmon, then top with either the optional toasted coconut and/or a few lemon slices. Serve immediately warm.