Is my dog's human food diet healthy and nutritionally balanced?

Hi there. No, this is not okay - Rio needs to be on a nutritionally complete and balanced diet designed for dogs. What you are describing is not healthy for him, and puts him at risk of developing a variety of different health problems due to nutritional imbalances and deficiencies.

I would recommend feeding a good quality commercial dog food from a reputable company such as Purina, Hills, or Royal Canin. If you prefer to cook for your dog at home, that's fine - but it needs to be a diet formulated to meet his nutritional needs, not something you make up yourself. In that case, you can use the website www.balanceit.com to put together appropriate recipes using ingredients of your choosing, or consult with a veterinary nutritionist about formulating a custom diet for him. You can find more information on how to do this here: https://acvn.org/nutrition-consults/