Preheat oven to 400 °F (200 °C).
Boil macaroni in salted water until about 90% cooked. Drain and set aside.
In a deep pan, warm coconut oil over medium. Add pimento, scallions, parsley, thyme, black pepper, and garlic; sauté 2 minutes.
Stir in half the chopped bacon. Add flour and cook 4–5 minutes on low.
Slowly whisk in chilled coconut milk; simmer gently and grate in nutmeg.
Turn off heat; stir in 3 cups cheddar and salt until smooth.
Combine sauce with pasta and transfer to a baking dish.
Top with remaining cheddar, Asiago (if used), and reserved bacon.
Bake 20 minutes until golden and bubbly. Serve immediately!