01 - Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease a baking dish.
02 - Pat salmon fillets dry. Brush both sides with olive oil and season with salt and pepper. Place fillets, skin side down, on the prepared baking sheet.
03 - In a small saucepan, combine blood orange juice, zest, honey, soy sauce, Dijon mustard, garlic, and red pepper flakes. Bring to a simmer over medium heat. Cook, stirring occasionally, until reduced by half and slightly syrupy (about 7–10 minutes). Remove from heat.
04 - Spoon half of the glaze over the salmon fillets.
05 - Bake salmon for 12–15 minutes, or until just cooked through and flaky.
06 - Remove from oven. Brush fillets with remaining glaze.
07 - Garnish with chopped parsley and blood orange slices. Serve immediately.