An apparatus, system and method for changing the positional orientations of peppers or other individual food product items or pieces on an open conveyor belt as the product items or pieces are being continuously conveyed through an apparatus for flame roasting, cooking, searing or otherwise treating the product. The open conveyor belt carries the peppers or other products over one or more air knives which are installed in the apparatus beneath the open conveyor belt for rolling, rotating, and/or momentarily lifting the product items or pieces.