If you go to the website and read the ingredients they've added protein to these "protein packed" pancakes.
Pancakes are a simple recipe when you make them from scratch. By weight the recipe is:
2 parts liquid
1 part egg
1/2 part butter/fat
2 parts flour
1 teaspoon baking powder
1/2 teaspoon salt
Whisk together the wet ingredients, then mix it with the dry ingredients.
A large egg is typically 50 grams so if you start with the egg's weight it's easy to adjust the recipe up. (I'm not sure if the baking powder and salt would increase linearly when you increase the other ingredients.)
For the liquid you'd typically use milk but I like to crank up the richness in recipes by using the canned Carnation evaporated milk. You could also try using 2 eggs and reducing the milk by the appropriate amount (e.g., for 1 egg the total liquid of the egg and milk would be 150 grams; for 2 eggs it would also be 150 grams but you'd use 50 grams of milk instead of 100 grams.)http://www.amazon.com/Ratio-Simple-Behind-Everyday-Cooking/dp/1416571728/