In a medium bowl, combine the chicken pieces with olive oil, lemon juice, lemon zest, oregano, thyme, salt, and pepper. Mix well to coat. Let it marinate for at least 15 minutes while you prepare the vegetables.
In a large skillet, heat 0.015 kg of olive oil over medium-high heat. Once hot, add the marinated chicken to the skillet in a single layer. Cook for about 5-7 minutes, stirring occasionally, until the chicken is cooked through and golden brown. Remove the chicken from the skillet and set it aside.
In the same skillet, add another 0.015 kg of olive oil. Add the minced garlic and sauté for about 30 seconds until fragrant. Add the sliced zucchini, bell pepper, and cherry tomatoes. Season with a pinch of salt and pepper. Stir-fry the vegetables for about 4-5 minutes, or until they are tender but still a bit crisp.
Return the cooked chicken to the skillet with the vegetables. Stir everything together and cook for an additional 2-3 minutes to allow the flavors to meld. Taste and adjust seasoning if needed.
Remove from heat and garnish with fresh parsley. Serve hot, with lemon slices on the side for an extra burst of citrus.