Season your salmon with salt, pepper, garlic powder, onion powder, slap ya mama (or tony's), rub in seasonings with 1 tsp of olive oil on each filet and set aside.
Heat 1 tsp of olive oil in a cast iron over medium heat (brushing the bottom to coat evenly), add red pepper flakes, 1/4 tsp of pepper and toast for 30 secs
Add brussels, stir for a few seconds to coat in oil, then leave undisturbed for about 2 minutes. After 2 minutes, create a hole, add 2 tbsp. of salted butter, melt, and then stir in with your brussels. Cook for 2-3 more minutes, stirring every 30 seconds (until brussels begin to char). Add a pinch of salt to season.
Stir in your fresh parmesan, and remove brussels from heat immediately into a bowl or plate
In the same pan, brush the cast iron with olive oil (so salmon doesn't stick). Add salmon, and cook on each side for 3 minutes on each side (cover in between flips to cook faster)
Plate with brussels and enjoy!