Preheat oven to 400°; mix halved brussels with 1 tbsp oil + season with salt/pep; place on a sheet pan + roast 17-25 min until golden + tender

Pat fish dry + lay on a separate pan lined with parchment or foil; drizzle on oil, season with 2 tsp of seasoning + salt/pep; roast 9-12 min until cooked through + flakes easily with a fork

Meanwhile, microwave 2 potatoes in their wrappers on high, 6-8 min, flipping halfway through (caution, that's a hot potato!); carefully cut in half

Divide everything between plates—looks great!