Preheat your oven to 400°F to prepare for roasting the vegetables.
Toss the broccoli florets with a half tablespoon of olive oil, salt, and pepper on a parchment-lined baking sheet.
Roast the broccoli for 15-20 minutes until the edges are tender and slightly charred.
Season the chicken breast with garlic powder, salt, and pepper on both sides for maximum flavor.
Heat a grill pan or heavy skillet over medium-high heat with a half tablespoon of olive oil.
Grill the chicken for about 6 minutes per side until the internal temperature reaches 165°F and the meat is juicy.
Prepare the quinoa according to package directions or fluff your pre-cooked quinoa in a large mixing bowl.
Whisk together the remaining olive oil and lemon juice in a small jar to create a bright, zesty dressing.
Combine the fluffed quinoa and roasted broccoli in the mixing bowl, tossing gently with the lemon dressing.
Slice the grilled chicken into strips and place it atop the quinoa and broccoli mixture before serving warm.