What Costco food item has the most protein? A detailed breakdown
                                
                                
                                •
                                
                                
                        
                                    
                                    6 min read                                
                            
                                According to nutritional data, a single serving of Costco's rotisserie chicken contains a remarkable amount of protein, making it one of the top contenders. Determining what Costco food item has the most protein depends on the product category, but several key items consistently rise to the top for shoppers focused on nutrition.