Arrange the sliced oranges on a baking sheet. Lay the salmon down over the top season with salt and pepper.
In a small bowl stir together the ginger, orange zest, vegetable oil and red pepper.
Spread the orange mixture over the salmon and roast until just cooked through, about 8 to 10 minutes.
Top with cilantro and serve.
Notes
Start checking the salmon a minute or two before the suggested cooking time. Salmon continues to cook slightly after it's removed from the oven, and taking it out when it's just opaque keeps it tender and flaky.