In a medium bowl, whisk together honey, soy sauce, lemon juice and red pepper flakes.

In a large skillet over medium-high heat, heat two tablespoons oil. When oil is hot but not smoking, add salmon skin-side up and season with salt and pepper. Cook salmon until deeply golden, about 6 minutes, then flip over and add remaining tablespoon of oil.

Add garlic to the skillet and cook until fragrant, 1 minute. Add the honey mixture and sliced lemons and cook until sauce is reduced by about 1/3. Baste salmon with the sauce.