Using a sharp knife, cut off the base from the swede so that it is level. Cut the swede in half through the centre. Peel each half.
Lay each half flat on the board, and cut into 1 cm slices. Then cut each slice into 1 cm chips.
Place the chips in a large bowl and toss with the olive oil and seasoning. Tip the chips out onto a baking tray. If necessary, use 2 trays so that the chips are well spaced.
Bake for 20 minutes. Flip the chips partway through and if necessary turn the trays to ensure they cook evenly.
After 20 minutes, remove from the oven and sprinkle with the grated parmesan. Return the tray to the oven for a final 5 minutes.