Step 4: Season and Add the Brussels Sprouts - Put the halved Brussels sprouts in a medium bowl and add the remaining 2 tablespoons olive oil and remaining 1 tablespoon lemon juice. Toss gently until the sprouts are lightly coated, then spread them around the chicken in a single layer. When you can, turn the cut sides down against the
baking sheet. That direct contact with the hot metal is what gives you those deeply browned edges that taste almost nutty and a little sweet. Avoid piling the sprouts on top of one another, since crowded vegetables tend to steam rather than roast.