01 - Preheat oven to 425°F and line a baking tray with parchment paper.
02 - Pat cod fillets completely dry with paper towels to ensure crispy skin.
03 - Rub both sides of each fillet with olive oil, then season the flesh side with salt, pepper, and smoked paprika if using.
04 - Place cod fillets skin-side up on the prepared tray and gently press to ensure contact with the surface.
05 - Sprinkle minced garlic and lemon zest evenly over fillets.
06 - Arrange lemon slices around fillets and drizzle with half the lemon juice.
07 - Bake for 12–15 minutes until cod is opaque and skin is golden and crisp. Optionally, broil for 1–2 minutes for extra crispiness.
08 - Remove from oven, drizzle with remaining lemon juice, garnish with parsley, and serve immediately.