Preheat your grill to medium-high heat.
Season the chicken breast with your favorite spices (salt, pepper, and a squeeze of lemon work well) and lightly coat with a small amount of olive oil.
Grill the chicken for about 6-7 minutes per side, or until fully cooked with an internal temperature of 165°F.
While the chicken cooks, preheat your oven to 425°F for roasting the broccoli.
Toss the broccoli with a splash of olive oil, salt, and pepper, then spread out on a baking sheet.
Roast the broccoli in the oven for about 15-20 minutes until the edges are slightly crispy and the stems are tender.
Prepare quinoa according to package instructions, usually by boiling 1 part quinoa with 2 parts water until soft.
To plate, serve the grilled chicken breast alongside the roasted broccoli and a side of fluffy quinoa.
Drizzle the remaining olive oil over the quinoa or broccoli if desired, and enjoy your balanced, protein-packed lunch.