As an alternative to more calorie-dense potato chips, Special K has introduced Popcorn Chips in 2 flavors – Butter and Sweet & Salty. A 1-ounce serving (28 chips) is generous with 120 calories. Sweet & Salty has 105 milligrams of sodium and Butter 170. Neither is a good source of fiber with only a trace amount in a serving which is disappointing because popcorn is a whole grain. Both flavors have a mild popcorn taste and are crunchy. They are kosher certified (OU). Kids would enjoy these in their lunchbox. The trick is opening the box and only eating one serving.