Heat olive oil in a large, deep skillet over medium heat.
Add the diced chicken breast to the skillet, season with salt and pepper, and sauté until golden brown, about 5-7 minutes. Remove the chicken from the skillet and set aside.
In the same skillet, add the chopped onion and sauté until translucent, about 3-4 minutes.
Stir in the minced garlic, and cook for an additional minute until fragrant.
Add the diced red bell pepper, zucchini, and cherry tomatoes to the skillet. Sauté for about 5 minutes until the vegetables are tender.
Stir in the orzo pasta, dried oregano, thyme, and red pepper flakes. Mix everything together.
Pour in the vegetable or chicken broth and bring to a gentle boil. Reduce the heat to low and cover the skillet.
Cook for about 10-12 minutes, or until the orzo is tender and has absorbed most of the liquid, stirring occasionally to prevent sticking.
Once the orzo is cooked, return the chicken to the skillet and gently fold everything together. Allow to heat through for 2-3 minutes.
Remove from heat and sprinkle crumbled feta cheese and chopped fresh parsley on top before serving.
Notes
Optional red pepper flakes can be adjusted for spice preference.