Season the salmon fillets with salt, black pepper, and cayenne pepper, then set aside.
Combine honey, warm water, apple cider vinegar (or lemon juice), and a pinch of salt in a bowl and stir well.
Heat a cast iron skillet over high heat and add olive oil until shimmering.
Sear the salmon fillets skin side down for about 1 minute, then flip and cook for another minute.
Add minced garlic to the skillet and sauté until fragrant, then pour in the honey mixture and add lemon wedges.
Broil the salmon for about 1 minute until charred on top.
Garnish with chopped parsley and serve immediately.