I feed Nalani a mix of food, usually it consists of:
Broccoli
Assorted beans and peas
Cauliflower
Kale
Mango
Strawberry
Blueberry
Blackberry
Carrots
Corn
Beet
Parsley
Sweet Potato
Celery
Pumpkin
Butternut squash
Banana
She also gets fresh sprouts daily, the sprout mix contains:
Green whole Peas,
Chick Peas,
Mung Beans,
French, Red and Green Lentils,
Barley,
Buckwheat,
Kamut,
Oats,
Sunflower Seeds.
Once every two weeks I will boil and egg and give her half with the shell included.
Everything in bold that are listed above are high in protein. Try to put as much of those foods in his daily diet as possible. I also know that you can give boiled chicken breast, but I have never done it. Nalani also had bloodwork done a few weeks ago and all her levels were normal and healthy. Hope this helps.