Preheat the oven to 200°C.
Put the chicken breasts in a bowl, season with onion powder, paprika, oregano, salt, and pepper, and rub it all over. Place the chicken into a baking dish.
Scatter the chorizo and sundried tomatoes over the top.
In a bowl, whisk together the cream, stock, garlic granules, onion granules, and flour until smooth. Stir in half the parmesan.
Pour the mixture over the chicken, then sprinkle over the remaining parmesan.
Bake uncovered for 25 minutes, until the chicken is cooked through, and the sauce is bubbling. Dish it up and enjoy.