Preheat your grill or grill pan over medium-high heat.
Season the chicken breast lightly with salt, pepper, and your favorite herbs if desired.
Grill the chicken for about 6-7 minutes per side until it reaches an internal temperature of 165°F. Allow it to rest for a few minutes before slicing.
While the chicken is grilling, preheat your oven to 400°F for roasting the broccoli.
Toss broccoli florets with olive oil, salt, and pepper, and spread them evenly on a baking sheet.
Roast the broccoli in the oven for 15-20 minutes until tender and slightly crispy at the edges.
Prepare quinoa according to package instructions if not already cooked.
Assemble your plate by layering the quinoa, adding sliced grilled chicken on top, and serving the roasted broccoli on the side.
Enjoy your balanced, nutritious lunch!