Preheat the oven to 350°F.
In a large bowl, mix the chicken, 1 cup marinara, and ricotta cheese.
Transfer to a baking dish and spread the remaining ½ cup marinara on top.
Add parmesan and fresh mozzarella over the chicken mixture.
In a bowl, mix butter, parmesan, and almond flour, then sprinkle over the casserole.
Bake for 25 minutes until golden and bubbly. Broil for extra browning if desired.
Garnish with fresh herbs and serve!