Preheat oven to 350 degrees.
In a frying pan, saute onion until translucent. Add in cauliflower rice and bone broth. Simmer for 5 minutes.
Mix together greek yogurt, cheddar cheese, garlic, and seasoning.
In a 9x13 baking dish, combine cheese mixture, cooked chicken, steamed broccoli, and cauliflower mixture.
Bake for 30-32 minutes.