Kellogg's Special K Chocolate Peanut Protein Snack Bar. 4g protein. Helps you stay on track. Drop a jean size in 2 weeks. As part of the Special K Challenge. Naturally & artificially flavored. Kellogg's Family Rewards. kelloggsfamilyrewards.com. 6 - 0.9 oz (26g) bars. Enjoy all of our delicious flavors! Kellogg's Special K, protein snack bar, 4g protein, helps you stay on track, chocolate peanut. Kellogg's Special K, protein snack bar, helps you stay on track, 4g protein, chocolate delight. Visit: kelloggs.com. Call: 1-800-962-1413. , , 2012 Kellogg NA Co.