Preheat your grill to medium-high heat.
Season the chicken breast lightly with salt and pepper (or your favorite herbs) and set aside.
Grill the chicken breast for about 6-7 minutes on each side, or until the internal temperature reaches 165°F. Once done, let it rest for a few minutes before slicing.
Preheat your oven to 400°F for roasting the broccoli.
Toss broccoli florets with 1 teaspoon of olive oil, a pinch of salt, and pepper. Spread evenly on a baking sheet.
Roast the broccoli in the oven for about 15-20 minutes until tender and slightly browned.
Prepare quinoa if not already cooked: Rinse quinoa thoroughly, then combine 1 part quinoa to 2 parts water; bring to a boil, reduce heat, cover, and simmer for about 15 minutes or until water is absorbed.
Plate the dish by layering a serving of quinoa, adding roasted broccoli on the side, and topping with sliced grilled chicken breast.
Enjoy your balanced and nutritious lunch!