Preheat your oven to 400°F.
In a small bowl, combine lemon juice, mixed herbs, garlic powder, salt, and pepper. Reserve a little extra for finishing the dish.
Place the chicken breast in a shallow dish and coat it with the marinade. Let it sit for 10-15 minutes.
Lightly dredge the marinated chicken in almond flour, ensuring an even coating for a crispy finish.
Arrange the chicken on a baking sheet lined with parchment paper.
In a separate bowl, toss the chopped broccoli with olive oil, a pinch of salt, and a dash of lemon juice.
Spread the broccoli evenly on the baking sheet around the chicken.
Bake in the preheated oven for 20-25 minutes or until the chicken is cooked through and the broccoli is tender with slightly crispy edges.
Heat the pre-cooked quinoa if serving warm, and plate alongside the chicken and roasted broccoli.
Drizzle a touch more lemon juice or sprinkle some extra herbs over the dish for added brightness before serving.