01 - Preheat your oven to 400°F. Line a baking sheet with parchment paper for easy cleanup, or lightly grease a baking dish.
02 - Gently pat the salmon fillets dry with paper towels. Brush both sides of each fillet generously with olive oil, then season evenly with sea salt and freshly ground black pepper. Arrange the fillets, skin side down, on the prepared baking sheet.
03 - In a small saucepan, combine the fresh blood orange juice, blood orange zest, honey, soy sauce (or tamari), Dijon mustard, finely minced garlic, and crushed red pepper flakes (if desired). Bring the mixture to a gentle simmer over medium heat. Continue to cook, stirring occasionally, until the glaze has reduced by approximately half and achieved a slightly syrupy consistency, about 7–10 minutes. Remove the saucepan from the heat.
04 - Carefully spoon about half of the prepared blood orange glaze evenly over the salmon fillets.
05 - Transfer the baking sheet to the preheated oven and bake the salmon for 12–15 minutes, or until the fish is just cooked through and flakes easily with a fork.
06 - Carefully remove the salmon from the oven. Brush the cooked fillets generously with the remaining blood orange glaze.
07 - Garnish the baked salmon with freshly chopped parsley and optional fresh blood orange slices. Serve immediately for optimal flavor and enjoyment.