Preheat oven to 400°; pat fish dry, line a sheet pan with foil, drizzle fish with oil + salt/pep; bake 10-12 min until firm, opaque + cooked through, turning pan halfway through cook time

Meanwhile, heat 1 tbsp oil in skillet over med-high; add potatoes in a single layer + sear undisturbed, 2-3 min until browned; flip + heat 2-3 min until crispy + hot

Add spinach + 2-3 tbsp dressing to a large bowl; toss to combine + add to plates

Top salads with potatoes + trout—looks great!