The guidelines on the side of the bag usually give about a 200% range of what you should feed your dog. By following those guidelines you can be underfeeding your dog by half or overfeeding your dog double what they should get. That is because those guidelines are usually based on the size of the dog and maybe slightly on the age (puppy, adult, senior), but rarely ever on activity level. A dog being kept outside in the winter in a cold climate is even a factor on how many calories they should get. You can find a basic calculator here, but be sure to be honest about your dog's activity level. http://www.dogfoodadvisor.com/dog-fe...od-calculator/

A premium food can make a big difference if a dog has skin infections, ear infections, allergies or other health issues, but if your dog is doing fine on the regular food don't expect to see some miraculous change. Your dog is probably already pretty spoiled with the gravy so he may not want to eat any sort of kibble without his toppings. It may take some convincing.