Pre heat oven to 425F
In the casserole dish mix the diced chicken, lemon zest, salt, pepper, italian seasoning and starch until the chicken is coated
Add the gnocchi, lemon juice, broth and garlic cloves. Stir so the gnocchi is fully covered by the broth
Add the spinach on top and cover with tin foil. Bake for 15 minutes
At the 15 minute mark stir the casserole and if you're using the mozzarella spread it on top of the dish (tip: Your broth should be bubbling when you check it at the 15 minute mark. If it's not return the dish to the oven for another 5-10 minutes before stirring and adding the cheese
Bake another 15 minute covered.
Uncover for 5 minutes and bake until the cheese is melted and lightly browned.
Allow the dish to cool for 5-10 minutes before serving
