Preheat a grill or grill pan over medium-high heat.
Season the chicken breast with salt, pepper, and any preferred herbs.
Grill the chicken breast for about 6-7 minutes per side, or until the internal temperature reaches 165°F.
While the chicken is grilling, preheat your oven to 425°F for roasting the broccoli.
Toss the broccoli with a small amount of olive oil, salt, and pepper, then spread it out on a baking sheet.
Roast the broccoli in the oven for about 15-20 minutes until tender and slightly crispy on the edges.
Prepare the quinoa as per package instructions, or reheat if pre-cooked, ensuring it weighs approximately 1/3 cup when cooked.
Plate your grilled chicken alongside the roasted broccoli and quinoa, and enjoy your balanced, nutritious lunch.