Heat pan over medium-high heat.
Season salmon generously with salt and pepper.
Next, pour oil into pan and place salmon skin-side down; adjust heat as necessary if bottom begins to brown too quickly. Cook salmon 2-3 minutes.
Add butter, thyme, and garlic and let the butter melt and bubble. Begin basting the salmon, tilting the pan so that the butter juices pool together. Continue until the salmon is cooked through and opaque, about 5 minutes.