Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a bowl, toss sweet potato, zucchini, bell peppers, and asparagus with olive oil, salt, pepper, and red pepper flakes.
Spread vegetables on the baking sheet and roast for 10 minutes.
Meanwhile, brush salmon fillets with olive oil and season with salt and pepper.
Remove vegetables from oven, add salmon to the pan, and return to oven.
Roast for another 10–12 minutes until salmon is cooked through and vegetables are tender.
In serving bowls, add arugula or spinach. Top with quinoa if using.
Add roasted vegetables and salmon.
Drizzle with pesto, olive oil, and a squeeze of lemon.
This Roasted Salmon Veggie Bowl is best served warm with fresh toppings.