In a medium-sized pot, combine 1 cup of rinsed quinoa with 2 cups of water or vegetable broth. Bring to a boil, then reduce the heat to low, cover, and simmer for 15 minutes or until the quinoa is fluffy and the liquid has been absorbed. Set aside.

In a large skillet, heat 1 tablespoon of olive oil over medium-high heat. Add the diced chicken breast, season with salt and pepper, and cook until golden brown and cooked through, about 7-10 minutes.

In a small bowl, whisk together the honey and Dijon mustard until well combined. Once the chicken is cooked, reduce the heat and add the honey mustard sauce, stirring to coat the chicken evenly. Let it cook for an additional 2-3 minutes to warm the sauce.

In serving bowls, layer the cooked quinoa, sautéed chicken in honey mustard sauce, and top with diced bell pepper, cucumber, and mixed greens. Add any optional toppings like sliced avocado, chopped nuts, or feta cheese to enhance the dish.

Drizzle any leftover honey mustard sauce on top, grab a fork, and enjoy your flavorful Honey Mustard Chicken Quinoa Power Bowl!