Preheat the grill to medium-high heat.
Season the chicken breast with salt, pepper, and your preferred herbs.
Place the chicken on the grill and cook for about 6-7 minutes per side until the internal temperature reaches 165°F.
While the chicken is grilling, preheat the oven to 425°F for the broccoli.
Toss the broccoli with a drizzle of olive oil, salt, and pepper, then spread it on a baking sheet.
Roast the broccoli in the oven for 15-20 minutes until tender and slightly crispy on the edges.
If not pre-cooked, prepare quinoa according to package instructions, then measure out approximately 2/3 cup once cooked.
Plate the grilled chicken breast with the roasted broccoli and quinoa, and serve warm.