Dietitians and nutritionists have identified various high-protein foods available at Costco, with some outlets reporting on specific snacks and others on a broader range of products. The number of recommended high-protein foods at Costco varies across reports, ranging from 7 to 20 items. Some dietitians have also shared their personal shopping choices at Costco, including high-protein and high-fiber options, although their recommendations may not always align.