Preheat your oven to 425°F for roasting the broccoli.
Season the chicken breast lightly with salt, pepper, and herbs of your choice. Preheat a grill or grill pan over medium-high heat and grill the chicken for about 6-7 minutes per side until fully cooked. Once done, let it rest for a few minutes before slicing.
Rinse the quinoa under cold water. In a small saucepan, combine the quinoa with water (use a 1:2 ratio) and bring to a boil. Reduce heat, cover, and simmer for about 15 minutes until the water is absorbed. Fluff with a fork.
Toss the broccoli florets with olive oil, salt, and pepper. Spread them on a baking sheet and roast in the preheated oven for about 15-20 minutes until tender and slightly crispy on the edges.
Slice the avocado into cubes or slices for a fresh finish.
Assemble your plate by adding the cooked quinoa, roasted broccoli, and sliced grilled chicken. Top with avocado pieces and, if desired, a squeeze of lemon juice for brightness.
Enjoy your nutritious and balanced lunch!