Preheat the oven to 425°F.
Chop the sweet potato into 1-inch cubes. Trim Brussels sprouts and cut in half.
In a small dish, add the sea salt, black pepper, and poultry seasoning and mix together. Set aside.
Add chicken to a sheet pan and space it out evenly across the whole pan.
Using a pastry brush, brush the chicken breasts with the melted ghee.
Fill in the blank space on the baking sheet with the chopped Brussels and sweet potatoes. Brush the remaining ghee onto them as well.
Sprinkle the spice mix over the top of the chicken, Brussels, and sweet potatoes.
Bake for 25 minutes or until the chicken is 165°F internal temperature, then turn the oven to broil and broil for 3 to 5 minutes or until golden brown.
While the chicken is baking, add the bacon to your air fryer and cook at 400°F for 10 to 12 minutes or until crispy to your liking. Remove from the air fryer and chop into small pieces.
Remove the chicken from the oven, and sprinkle the bacon on top.
Serve immediately.