Preheat your grill to medium-high heat. Season the chicken breast lightly with salt, pepper, and any preferred herbs.
Place the chicken on the grill and cook for about 6-7 minutes per side, or until the internal temperature reaches 165°F. Once cooked, let the chicken rest for a few minutes before slicing.
Meanwhile, cook the quinoa according to the package instructions. Typically, this involves rinsing the quinoa and simmering it in water for about 15 minutes until fluffy.
Preheat the oven to 425°F. Toss the broccoli with olive oil, salt, and pepper, and spread it on a baking sheet in a single layer.
Roast the broccoli in the oven for about 15-20 minutes, tossing halfway through, until the edges are slightly crispy and the broccoli is tender.
Plate the grilled chicken alongside the quinoa and roasted broccoli. Enjoy your nutrient-dense, balanced lunch!