Agreed, the statement about eggs having too much sulphur?????? That's a new one. And I'd need to see a study to even consider it as being reliable information. Eggs make a wonderful, high protein, appropriate treat, especially for chicks.
Why would you want to give them a cupcake that is nothing but sugar and empty calories? They need the nutrition that is in their feed. Excess sugar can cause diarrhea, and may even upset the bacterial balance in their guts. Treat them like chickens, feed them like chickens. Sod is a great...