Preheat your grill or grill pan to medium-high heat.
Season the chicken breast with salt, pepper, and a drizzle of olive oil.
Grill the chicken for about 6-7 minutes per side, or until fully cooked and internal temperature reaches 165°F.
While the chicken is grilling, preheat the oven to 425°F for roasting broccoli.
Toss the broccoli with a small amount of olive oil, salt, and pepper, then spread on a baking sheet.
Roast the broccoli in the oven for 15-20 minutes until tender and slightly crispy on the edges.
Prepare the quinoa as per package instructions if not already cooked. Use about 2/3 cup cooked quinoa for serving.
Plate the grilled chicken alongside the roasted broccoli and quinoa, and enjoy your balanced, nutritious lunch.