Cook Orzo:
Cook orzo according to package directions. Drain and set aside.

Cook Chicken:
In a large skillet, heat 1 tablespoon olive oil over medium-high heat. Add diced chicken, garlic powder, salt, and pepper. Cook until chicken is golden and cooked through, about 5–7 minutes. Remove from skillet and set aside.

Cook Vegetables:
In the same skillet, add the remaining 1 tablespoon olive oil. Sauté chopped zucchini, bell pepper, and broccoli for 3–4 minutes until just tender.

Combine and Stir Fry:
Add the cooked orzo and chicken back into the skillet with the veggies. Stir in lemon juice, lemon zest, oregano, and red pepper flakes (if using). Cook everything together for 2 more minutes, until well mixed and heated through.

Finish & Serve:
Stir in grated Parmesan and adjust seasoning to taste. Garnish with fresh parsley and serve warm.