Cook pasta according to package. Strain pasta and place in a bowl. Add sausage, bell pepper, tomato, fontina cheese, half mozzarella cheese, sea salt, and marinara sauce. Stir together.
In a baking dish that will fit into the air fryer, coat dish with cooking spray and add pasta mixture.
Set to 400°F for 10 minutes. After 10 minutes, add remaining mozzarella cheese to the top.
Adjust and increase the temperature to 400°F. Cook for an additional 3-4 minutes until cheese is melted. Top with fresh basil.
