Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Toss the cremini mushrooms with half of the ghee, half of the sea salt, black pepper, and the dried oregano.
Spread the mushrooms in a single layer and roast for 20 minutes until they are golden and tender.
While mushrooms roast, season the chicken breast with the remaining salt and pepper.
Heat the remaining ghee in a skillet over medium-high heat and sear the chicken for 6-7 minutes per side until fully cooked.
Remove the chicken from the skillet to rest, then add the minced garlic and spinach to the same pan, sautéing until wilted.
Assemble the bowl by placing the cooked quinoa at the base, followed by the roasted mushrooms and sautéed spinach.
Slice the chicken and place it on top, then garnish with fresh parsley and a bright squeeze of lemon juice.