Preheat your oven to 400°F (200°C).
Chop the zucchini, red bell pepper, and broccoli into uniform, bite-sized pieces.
Toss the vegetables in a bowl with 1 teaspoon of olive oil and a pinch of salt and pepper.
Spread the vegetables in a single layer on a parchment-lined baking sheet and roast for 18-20 minutes until tender and slightly browned.
While vegetables roast, season the chicken breast with your favorite dried herbs, salt, and pepper.
Grill the chicken over medium-high heat for approximately 6-7 minutes per side, or until the internal temperature reaches 165°F.
Let the chicken rest for 3 minutes before slicing it into strips.
In a serving bowl, combine the cooked quinoa with the roasted vegetables.
Top the bowl with the sliced grilled chicken.
Drizzle the remaining teaspoon of olive oil and the fresh lemon juice over the entire bowl before serving.