Preheat your oven to 425°F. Line a baking sheet with parchment paper for the broccoli.
Rinse the quinoa under cold water and add it to a small saucepan with water. Bring it to a simmer and cook for about 15 minutes until the water is absorbed. Fluff with a fork and set aside.
Cut the broccoli into bite-sized florets, then toss with a light spray of olive oil, salt, pepper, and garlic powder. Spread them evenly on the prepared baking sheet.
Roast the broccoli in the preheated oven for 15-20 minutes, stirring halfway through, until they are tender and slightly crispy on the edges.
While the broccoli is roasting, heat a non-stick skillet over medium-high heat. Lightly spray with olive oil cooking spray.
Season the salmon fillet with salt, pepper, and a sprinkle of garlic powder. Place the salmon skin-side down (if applicable) in the skillet.
Sear the salmon for about 3-4 minutes on each side or until the salmon is cooked through and has a nice golden crust.
Plate the seared salmon alongside the roasted broccoli and serve with a side of cooked quinoa.