Preheat your grill or grill pan to medium-high heat.
Season the chicken breast with salt, pepper, and any desired herbs or spices.
Grill the chicken for about 6-7 minutes on each side until fully cooked and the internal temperature reaches 165°F. Allow it to rest for a few minutes before slicing.
Meanwhile, preheat your oven to 425°F. Toss the broccoli with olive oil, salt, and pepper, and spread it out on a baking sheet.
Roast the broccoli for approximately 15-20 minutes, until tender and slightly charred on the edges.
Prepare the quinoa as per package instructions if not pre-cooked, or simply reheat if already cooked.
Assemble your plate by layering the quinoa as a base, topping with sliced grilled chicken, and adding the roasted broccoli on the side.
Enjoy your balanced and nutritious lunch!