Preheat your grill or grill pan over medium-high heat.
Season the chicken breast with salt, pepper, and your favorite herbs for flavor.
Grill the chicken for about 5-7 minutes per side, or until fully cooked and the internal temperature reaches 165°F. Let rest, then slice.
While the chicken is grilling, preheat your oven to 400°F for roasting broccoli.
Toss the broccoli with olive oil, salt, and pepper, and spread it evenly on a baking sheet.
Roast the broccoli in the oven for about 15-20 minutes, until tender and lightly browned.
Reheat or prepare quinoa as per package instructions if not already cooked.
Slice the avocado and set aside.
Assemble your plate with quinoa as the base, topped with grilled chicken slices, roasted broccoli, and avocado slices on the side.
Drizzle with an extra touch of olive oil or a squeeze of lemon if desired, and enjoy!