Place the 2 salmon fillets in a small dish and pour 1/4 cup pure orange juice over them. Cover and refrigerate for at least 2 hours.
About 20 minutes before cooking, preheat the oven to 400°F and spray a small baking dish with cooking spray.
Remove the salmon from the marinade and discard the marinade. Pat the fillets dry with paper towels.
Heat 1 teaspoon coconut oil in a small skillet over medium-high heat until hot. Spread the 1 teaspoon honey evenly over both sides of the salmon fillets (use the full teaspoon). Sear the fillets in the hot skillet 1–2 minutes per side, until golden brown.
Transfer the seared salmon to the prepared baking dish and bake in the preheated oven 8–10 minutes, or until the salmon flakes easily with a fork.
While the salmon bakes, place 1 1/2 cups baby kale and 1 1/2 cups spinach in a large bowl. Add the segments from 2 small tangerines (or 1 orange), 3 tablespoons pomegranate seeds, and 1/2 avocado sliced. Toss gently to combine.
Make the orange-coconut vinaigrette: in a small microwave-safe bowl, melt 1/2 tablespoon coconut oil and 1 teaspoon honey (about 20 seconds). Whisk in 2 1/2 tablespoons fresh orange juice and a small pinch of salt until combined.
Pour the vinaigrette over the salad and toss gently to coat.
Divide the salad between two plates and top each portion with one baked salmon fillet. Serve immediately.