Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Clean the cremini mushrooms with a damp cloth and slice them into thick halves, then trim the woody ends off the asparagus.
In a small bowl, whisk together the melted ghee, minced garlic, and dried thyme until well combined.
Place the chicken breast on one side of the pan and season both sides with sea salt and black pepper.
Arrange the mushrooms and asparagus on the other side of the pan, ensuring they are in a single layer for maximum browning.
Drizzle the garlic-ghee mixture over the chicken and vegetables, tossing the veggies gently to coat.
Roast in the oven for 18-22 minutes, or until the chicken reaches an internal temperature of 165°F and the mushrooms are golden.
Serve the roasted chicken and vegetables over a bed of warm quinoa and garnish with freshly chopped parsley.