Preheat oven to 475°F. Line a large rimmed baking sheet with foil.
Combine salmon and everything bagel seasoning in a medium bowl; toss to coat well. Transfer to the prepared baking sheet. Bake until the salmon is cooked through, 8 to 10 minutes.
Transfer the salmon to a platter. Top each piece with cream cheese (generous ½ teaspoon each) and sprinkle with scallions.
