Preheat the oven to 375°F (190°C) and grease a 9x13-inch baking dish.
Season the chicken with oregano, garlic powder, salt, black pepper, and smoked paprika.
Sauté the onions in a large skillet over medium heat until soft. Add the seasoned chicken and cook until lightly browned.
Create the creamy base by stirring in the condensed soups, chicken broth, and heavy cream. Add the frozen mixed vegetables and simmer for 2-3 minutes.
Shred or slice the chicken, return it to the skillet, and stir to coat it in the sauce.
Transfer the mixture to the prepared baking dish and evenly place the biscuits on top.
Bake for 20-25 minutes, until the biscuits are golden brown and the filling is bubbly.
Let the dish rest for 5 minutes before serving.