Preheat your grill or grill pan to medium-high heat.
Season the chicken breast lightly with salt, pepper, and any preferred herbs.
Grill the chicken breast for about 6-7 minutes on each side, or until the internal temperature reaches 165°F. Let it rest briefly before slicing.
While the chicken is grilling, preheat your oven to 400°F for roasting the broccoli.
Toss the broccoli florets with a teaspoon of olive oil, salt, and pepper. Spread them evenly on a baking sheet.
Roast the broccoli in the oven for about 15-20 minutes, until tender and slightly charred on the edges.
Prepare the quinoa as per package instructions if not already cooked, aiming for about 0.67 cup cooked portion.
Plate the dish by placing the quinoa as a base, topping it with sliced grilled chicken, and adding a side of roasted broccoli.
Enjoy your balanced, nutrient-packed lunch!