Preheat your grill to medium-high heat and lightly oil the grates.
Season the chicken breast with salt, pepper, and your preferred herbs or spices.
Grill the chicken for about 6-7 minutes per side or until the internal temperature reaches 165°F. Let it rest for a few minutes before slicing.
While the chicken is grilling, preheat your oven to 425°F for the zucchini.
Slice the zucchini into rounds or half-moons, toss with a drizzle of olive oil, salt, and pepper, and spread evenly on a baking sheet.
Roast the zucchini in the oven for about 12-15 minutes until tender and lightly browned.
Prepare the quinoa according to package instructions if not already cooked. For a quick option, warm pre-cooked quinoa gently over the stove.
To serve, plate the grilled chicken alongside the roasted zucchini and a portion of quinoa. Enjoy your balanced and nutritious lunch!