Cut off the brown ends of the Brussels sprouts and pull off any yellow outer leaves. I usually slice some in half and keep others whole.
Mix them in a bowl with the olive oil, salt and pepper. Pour them on a sheet pan and roast for 35 to 40 minutes, until crisp on the outside and tender on the inside. Shake the pan from time to time to cook them evenly.
While roasting, cook bacon until nice and crispy and cut into pieces.
Sprinkle brussels sprouts with bacon, pomegranate arils, and hazelnuts. Sprinkle with extra salt, as needed. Serve immediately.