Preheat your grill or grill pan over medium-high heat.
Season the chicken breast lightly with salt, pepper, and any preferred herbs.
Grill the chicken for about 6-7 minutes per side, or until it reaches an internal temperature of 165°F.
Meanwhile, preheat your oven to 400°F for the broccoli.
Toss the broccoli in a small amount of olive oil, salt, and pepper; spread on a baking sheet.
Roast the broccoli in the oven for about 15-20 minutes until tender and slightly crispy.
Prepare the quinoa according to package instructions if not already cooked.
Plate a serving of quinoa, slice the grilled chicken breast, and add the roasted broccoli beside it.
Drizzle any remaining olive oil over the dish if desired and serve immediately.