Preheat your grill or grill pan over medium-high heat.
Season the chicken breast with your choice of salt, pepper, and a light drizzle of olive oil. If desired, add garlic powder or paprika for extra flavor.
Grill the chicken for about 6-7 minutes per side, or until the internal temperature reaches 165°F. Let rest for a few minutes before slicing.
While the chicken is grilling, prepare the quinoa. If not already cooked, rinse the quinoa under cold water, then combine it with water in a saucepan (use a 1:2 ratio of quinoa to water). Bring to a boil, then reduce to a simmer, cover, and cook until the quinoa is tender, about 15 minutes.
Preheat your oven to 425°F for the broccoli. Toss broccoli florets with a small amount of olive oil, salt, and pepper. Spread them on a baking sheet and roast for about 15-20 minutes until edges are browned and tender.
Plate the dish by placing the cooked quinoa, topped with sliced grilled chicken, and the roasted broccoli on the side. Enjoy your balanced, protein-packed lunch!