Preheat oven to 400℉. To a large bowl or right on a parchment lined sheet pan, toss potatoes and Brussels sprouts with olive oil and spices. Add in sliced chicken sausage coins and mix to combine. Spread in a single layer on a sheet pan.
Roast for 20-25 minutes, flipping halfway through until veggies are fork tender and sausage is cooked through.