Preheat your grill to medium-high heat and your oven to 425°F for roasting the broccoli.
Season the chicken breast with salt, pepper, and your favorite herbs or spices.
Grill the chicken breast for about 6-7 minutes per side, or until the internal temperature reaches 165°F. Allow it to rest before slicing.
Meanwhile, cook the quinoa according to package instructions by rinsing it and simmering it in water until it is fluffy (usually about 15 minutes).
Toss the broccoli with olive oil, salt, and pepper, then spread it on a baking sheet in a single layer.
Roast the broccoli in the preheated oven for 15 minutes until tender and slightly crispy on the edges.
Assemble your plate with a serving of quinoa, sliced grilled chicken, and roasted broccoli. Enjoy your balanced, nutritious lunch!