Combine chicken wings with mustard and toss to marinate.
Place ingredients (A) in a large plastic bag. Spray chicken wings with olive oil and put the wings into the plastic bag. Shake the plastic bag well to coat the chicken wings with the combined flour mixture.
Line a baking tray with foil and spray with olive oil. Arrange the wings on the foil-lined tray. Spray the wings with olive oil again and bake in a preheated oven at 200°C for 25-30 minutes or until wings are crisp and cooked through. Serve them hot.