Preheat your grill or grill pan over medium-high heat and lightly oil the grates.
Season the chicken breast with salt, pepper, and your favorite herbs if desired.
Grill the chicken 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 drizzle of olive oil, salt, and pepper, then spread evenly on a baking sheet.
Roast the broccoli for about 15 minutes until tender and slightly crispy on the edges.
Heat the cooked quinoa in a small saucepan over medium heat until warmed through, or serve at room temperature.
Plate the grilled chicken alongside the quinoa and roasted broccoli, adding any remaining olive oil drizzle over the broccoli.
Serve immediately and enjoy your balanced, flavorful lunch.