Set oven rack 6 inches from the heat source and preheat your oven's broiler. Line a baking sheet with aluminum foil and spray with cooking spray.
Stir mayonnaise, lemon juice, dill weed, and smoked paprika together in a bowl until smooth.
Lay salmon fillets, skin-side down, on the prepared baking sheet. Spinkle with salt and pepper and brush fillets with mayonnaise sauce.
Place under the broiler and cook until salmon is golden, bubbly, and the internal temperature reaches 130 degrees Fahrenheit-- about 5-8 minutes. Remove from oven, cover with foil, and allow to rest for 10 minutes before serving.