Place chickpeas on sheet pan and toss in the olive oil until evenly coated. Sprinkle buckwheat flour and salt over chickpeas and toss until evenly coated. Spread evenly across pan.
Place pan in oven and roast for 15-20 min until chickpeas are dried, and browned. Let cool and store in air tight container in the fridge. You can lightly toast before serving, if needed.