Preheat oven to 450°; mix potatoes with 1 tbsp oil, salt/pep + fave spices; roast on sheet pan 15-18 min until tender

Pat 4 fillets dry + season with salt/pep; heat 2 tbsp oil in skillet over med-high (get that pan hot, otherwise the fish will stick); in batches, add 2 fillets 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

Drain 2 tbsp capers (rinse if desired); add capers + butter to salmon pan; sauté 2-3 min scraping up brown bits until butter melts

Divide salmon + potatoes to plate; top salmon with caper butter sauce, delish!