Adjust oven rack 4 inches from broiler element and heat broiler. Brush rimmed baking sheet with 1 tablespoon oil.

Trim and discard bottom 1 inch of broccoli rabe stems. Wash broccoli rabe with cold water, then dry with clean dish towel. Cut tops (leaves and florets) of broccoli rabe from stalks, keeping tops whole, then cut stalks into 1-inch pieces; transfer to prepared sheet. Drizzle with remaining 3 tablespoons moil, sprinkle with salt, and toss to coat.

Broil until exposed half of leaves are well browned, 2 to 2½ minutes. Using tongs, toss to expose un-browned leaves. Return sheet to oven and continue to broil until most leaves are lightly charred and stalks are crisp-tender, 2 to 2½ minutes. Transfer to serving platter, drizzle with lemon juice, and season with salt and pepper to taste. Serve.