In a small bowl, combine the olive oil, lemon juice, minced garlic, and chopped fresh herbs to create a vibrant marinade.
Place the chicken breast in a shallow dish and pour half of the marinade over it, ensuring the chicken is well-coated. Allow it to marinate for at least 15-20 minutes.
While the chicken marinates, cook the quinoa according to package instructions. Once cooked, fluff with a fork and lightly season with a pinch of salt if desired.
Heat a non-stick skillet over medium heat and cook the marinated chicken for 5-7 minutes per side, or until the internal temperature reaches 165°F. Once cooked, slice the chicken into strips.
Prepare the vegetables by halving the cherry tomatoes, slicing the cucumber, and rinsing the baby spinach. Toss all the vegetables together in a bowl.
Assemble the bowl by placing a bed of quinoa, topping it with fresh vegetables, and arranging the sliced chicken on top. Drizzle the remaining marinade over the bowl for an extra burst of flavor.
Serve immediately and enjoy this wholesome, herb-infused meal.