Preheat oven to 475° + preheat sheet pan; peel (or don't peel!) potatoes, cut into ½-inch sticks, mix with 2 tbsp oil + salt/pep; spread onto hot pan + bake 15 min; flip, reduce heat to 425° + bake 10-15 min until golden

Pat fillets dry + season with salt/pep; heat 1 tbsp oil in skillet over med-high (get that pan hot, otherwise the fish will stick); add to pan skin-side down + sear 5-6 min undisturbed until fish naturally releases from pan; flip fish over + cook 1-2 min until fish is cooked through

Cut 2 strips of zest off lemon; heat 1 tbsp oil in skillet over med-high, add asparagus, zest + salt/pep; sauté 4-6 min until tender + bright green; squeeze lemon on asparagus

Slice butter in half + top salmon; divide all to plates