Preheat the oven to 400 degrees F. Line a half-sheet pan with foil.
Rub your thumbs along the cod to feel for any bones to remove. Use a knife or kitchen scissors to cut the fish into serving portions. Place the fish on the prepared pan.
Drizzle the olive oil on the cod. Rub the oil all over the fish, on both sides. Sprinkle on the salt and pepper.
Roast the cod on the center rack of the oven for 15 minutes, or until the fish is flaky and tender.
Serve immediately, with any pan juices poured on top. This cod tastes best without lemon.
Store leftovers in a sealed container in the refrigerator for up to four days. For best quality, do not freeze them.
Notes
You can use any sturdy white fish, such as pollock, haddock, halibut, orange roughy, etc.