Preheat the oven: Preheat your oven to broil, using a low or medium broil setting if your oven gives you the option.
Season the salmon: Pat the salmon dry with paper towels and season with garlic powder, salt, and black pepper.
Make the sauce: In a small bowl, whisk together the honey, soy sauce, apple cider vinegar, lemon juice, and water, then set the sauce aside.
Cook the garlic: Heat the olive oil and butter in a large oven-safe skillet set over medium heat. Once the butter has melted, add the minced garlic and cook for about 1 minute, stirring often, until fragrant.
Simmer the sauce: Pour the honey garlic sauce into the skillet and stir to combine. Bring the sauce to a gentle simmer.
Add the salmon: Carefully nestle the salmon fillets into the sauce, skin-side down. Let them cook for 4 to 5 minutes, occasionally spooning the sauce over the tops so they stay moist and flavorful.
Broil the salmon: Transfer the skillet to the oven and broil for 5 to 6 minutes, or until the salmon is cooked through and lightly caramelized around the edges. For best results, the thickest part of the salmon should register 145°F.
Finish and serve: Remove from the oven and spoon the warm sauce from the pan over the salmon. Finish with a squeeze of fresh lemon juice and garnish with green onions or fresh chives, if desired.