Add 960g diced chicken breast into a slow cooker along with a squeeze of juice from one lemon, 1 tsp garlic powder, 1 tsp onion powder, 1.5 tsp Italian herb seasoning, 1 tsp salt, 1 tsp black pepper, 1 diced onion, 4 diced garlic cloves, 90g freshly grated parmesan cheese, and 250ml chicken stock. Mix all ingredients in the slow cooker thoroughly.