Prepare the Chicken: In a medium bowl, combine the chicken, the 2 cloves minced garlic from the Chicken section, rosemary, oregano, lemon zest, red pepper flakes (if using), 2 tablespoons olive oil, sea salt, and black pepper; toss to coat.
Sear the Chicken: Heat 2 tablespoons olive oil in a large 12-inch oven-safe skillet over medium-high. Add chicken in a single layer; sear 3–4 minutes per side until deeply golden. Transfer to a clean plate (not fully cooked).
Sauté the Vegetables: Reduce heat to medium. Add the sliced red onion; cook 4–5 minutes until softened. Add the diced zucchini and the 2 cloves minced garlic from the Orzo Skillet; cook 2 minutes until fragrant.
Blister and Toast: Add the cherry tomatoes; cook ~5 minutes, stirring occasionally, until blistered and beginning to burst. Stir in the whole-wheat orzo; toast 1 minute.
Simmer the Orzo: Pour in the low-sodium chicken broth, scraping up browned bits. Stir in the halved Kalamata olives; bring to a simmer.
Cook Together: Nestle the seared chicken and any juices into the orzo. Reduce heat to low, cover, and simmer 12–15 minutes, until the orzo is tender, most liquid is absorbed, and the chicken reaches 165°F (74°C).
Broil and Rest: Position an oven rack ~6 inches from the heat source and preheat the broiler. Uncover and broil 2–3 minutes, watching closely, until the chicken tops are lightly browned. Remove and rest 5 minutes.
Finish and Serve: Stir in the fresh lemon juice. Garnish with parsley and oregano.