Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Clean the cremini mushrooms with a damp cloth and slice them into halves or quarters depending on size.
Mince the garlic cloves and finely chop the fresh thyme and rosemary leaves.
In a small bowl, melt the ghee and whisk in the minced garlic, thyme, and rosemary.
Place the mushrooms on the baking sheet, drizzle with half of the garlic-herb ghee, and season with half of the sea salt and black pepper.
Toss the mushrooms to coat evenly and roast in the oven for 18-20 minutes until tender and golden brown.
While mushrooms roast, season the chicken breast with the remaining sea salt and black pepper.
Heat a non-stick skillet over medium-high heat and sear the chicken for 6-7 minutes per side until the internal temperature reaches 165°F.
During the last 2 minutes of cooking the chicken, brush the remaining garlic-herb ghee over the meat.
Serve the seared chicken alongside the roasted mushrooms over a bed of warm cooked quinoa, finishing with a bright squeeze of lemon juice.