Position top rack in oven so it's 6" from the bottom of the broiler at the top of your oven. Line a rimmed baking sheet with foil (no parchment paper when broiling).
Place salmon filets skin side down in a single, non-touching layer. Brush filets with oil, and sprinkle with salt, pepper, and any seasoning you're using.
Broil on the top rack until the salmon flakes easily with a fork, and appears almost opaque in the center, and has a temp of 140 F about 7-9 minutes (although this will vary depending on how thick your filets are and the heat of your broiler). If you prefer your salmon well done, wait until it reaches an internal temp of 145 F. If the top starts to burn, loosely tent with foil
Let salmon rest for 5 minutes before serving and enjoy!
Notes
Previously frozen (defrosted) salmon typically has more water in it, which "jumps" when heated, causing the broiler to flare (not good). I found that placing the salmon lower in the oven is the best way to prevent this.