Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Slice the chicken breast into even 1-inch strips and cut the red bell pepper into bite-sized pieces.
Mince the garlic cloves finely.
In a large mixing bowl, combine the chicken, broccoli florets, and bell pepper pieces.
Drizzle the olive oil over the mixture and add the minced garlic, dried oregano, dried thyme, sea salt, and black pepper.
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 so it roasts rather than steams.
Roast in the oven for 20 to 25 minutes, or until the chicken is cooked through and the vegetables are tender and slightly charred.
Remove from the oven and immediately drizzle with fresh lemon juice to brighten the flavors before serving.