Preheat your grill or grill pan over medium-high heat and lightly oil the grates.
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 it reaches an internal temperature of 165°F.
While the chicken is grilling, preheat your oven to 425°F for the broccoli.
Toss the broccoli with a little olive oil, salt, and pepper, then spread it evenly 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 according to package instructions or heat the pre-cooked quinoa gently.
Finish by drizzling lemon juice over the grilled chicken and combining all components on your plate.
Serve the grilled chicken sliced, with quinoa on the side and roasted broccoli, and enjoy your healthy lunch.