Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper.
Cut the chicken breast into 1-inch bite-sized pieces and place them in a large mixing bowl.
Chop the broccoli into small florets, slice the bell pepper into strips, and cut the zucchini into half-moons.
Mince the garlic and zest half of the lemon into the bowl with the chicken and vegetables.
Add the olive oil, juice from the half lemon, dried oregano, dried thyme, sea salt, and black pepper to the bowl.
Toss everything thoroughly until the chicken and vegetables are evenly coated with the oil and seasonings.
Spread the mixture in a single layer on the prepared sheet pan, ensuring nothing is overcrowded.
Bake for 18-22 minutes, or until the chicken is cooked through and the vegetables are tender and slightly charred.
Remove from the oven and serve immediately while hot and flavorful.