I have a Scottish terrier who eats raw no problem. Just chicken is a bad idea that's not a balanced diet. Chicken backs, chicken thighs, pig feet, red meat, including bones, raw fish, etc etc. Some people also do fruit and vegetables but you have to put them in the blender to release the nutrients and what not since dogs do not chew their food nearly enough to break open the cells of the fruits and veggies that benefit them
You do not need a big dog to eat raw

All dogs are built to eat it.
Boiling the foods actually renegs the purpose of feeding raw. For dogs, their bodies were built to eat and digest raw foods. When you cook the foods, you actually boil out the nutrients