A durum wheat-based ingredient, preferably durum wheat flour, is used in the production of chip-like snacks having a very crunchy, fracturable, non-mealy texture. A machinable dough is formed from at least one durum wheat ingredient, such as durum flour, a no-gluten or low-gluten content starchy material, such as dehydrated potato flakes, water, and a reducing agent, such as sodium metabisulfite. The amount of the durum wheat ingredient may be from about 45% by weight to about 75% by weight, and the amount of reducing agent may be from about 50 ppm to about 300 ppm, based upon the total weight of the durum wheat ingredient and no-gluten or low-gluten content starchy material used to form the machinable dough. The dough may be sheeted, cut into pieces, and baked to a moisture content of less than about 4% by weight. The doughs may be used to produce reduced-fat, low-fat, or zero-fat chip-like products which provide a snapping or cracking sound upon breaking. The reducing agent promotes machinability and a crunchy, non-mealy chip-like texture in the snack.