Preheat the oven to 200 C.
Mix all marinade ingredients. Pour the mixture over salmon and marinate for 20 min in the fridge.
In a big bowl, mix potatoes, Brussels sprouts, oil, and spices. Line a baking sheet with parchment paper, transfer the potatoes and Brussels sprouts into one layer, trying not to touch each other. Roast 40-45 min. until lightly golden and fork-tender.
Line a baking sheet with parchment paper, transfer the salmon. Bake for 12-15 min.