How to Make It
In a small bowl, combine the orange juice, mint, cilantro, lemon juice and olive oil. In a medium bowl, combine the jicama and melon. Keep both bowls in the refrigerator until ready to serve.
Preheat the oven to 450°. On a large plate, combine all of the spices. Season the salmon with salt and coat both sides of each fillet with the spice mixture.
Heat the vegetable oil in a large ovenproof skillet. When the oil is hot, add the salmon, skin side down. Add the butter and shake the pan to incorporate the butter into the oil. Cook the salmon over high heat for 3 minutes, then transfer the skillet to the oven and roast for 2 minutes. Turn the fillets and roast them for about 3 minutes longer, depending on the thickness of the fish. Set the salmon on 4 large plates, skin side up.
Toss the jicama and melon with the dressing and season with a pinch of salt. Spoon the salad next to the fish and serve at once.