Preheat the grill to medium-high heat and the oven to 425°F for roasting the broccoli.
Season the chicken breast lightly with salt, pepper, and your favorite herbs.
Grill the chicken breast for about 6-7 minutes per side, or until the internal temperature reaches 165°F.
While the chicken is grilling, toss the broccoli with 1 teaspoon of olive oil, salt, and pepper, and spread it out on a baking sheet.
Roast the broccoli in the preheated oven for 15-20 minutes until the edges are slightly charred and tender.
Prepare the quinoa as per package instructions if not already cooked.
Once the chicken is done, let it rest for a couple of minutes, then slice it.
Assemble the plate with sliced grilled chicken, quinoa, and roasted broccoli, and drizzle the remaining teaspoon of olive oil over the chicken for extra flavor.