Season Chicken: In a small bowl, toss the chicken pieces with olive oil, minced garlic, oregano, thyme, lemon zest, salt, and pepper.
Cook Chicken: Heat the skillet over medium-high heat. Add the seasoned chicken and cook for 5-7 minutes, stirring occasionally, until cooked through and lightly browned. Remove chicken from the skillet and set aside.
Sauté Vegetables: Add the chopped mixed vegetables to the same skillet (add a tiny bit more oil if needed). Sauté for 5-7 minutes until tender-crisp. Season lightly with salt and pepper.
Combine & Finish: Return the cooked chicken to the skillet with the vegetables. Squeeze the lemon juice over everything and toss to combine. Cook for 1-2 more minutes until heated through.
Assemble Bowl: If using, place the cooked quinoa or brown rice in the bottom of a bowl. Top with the lemon herb chicken and vegetable mixture.
Garnish (Optional): Sprinkle with fresh parsley or feta cheese crumbles, if desired.
Enjoy: Serve your delicious and nourishing high-protein bowl immediately!