Heat a large skillet over medium heat.
Coat both sides of the salmon with the seasoning and cook, covered, until opaque throughout and blackened, 3 to 4 minutes per side.
Meanwhile, in another skillet, bring the broccoli rabe and ½ cup water to a simmer.
Cook the broccoli rabe, covered, tossing occasionally, until tender, 3 to 4 minutes. Drain and transfer to a plate.
Wipe out the second skillet and heat the oil over medium heat. Add the shallots and ¼ teaspoon salt and cook until softened, about 3 minutes.
Mix in the raisins and broccoli rabe. Serve with the salmon and lemon.