Heat olive oil in a large skillet over medium heat.
Season chicken breasts with salt and pepper.
Add chicken to the skillet and cook for 5-7 minutes on each side until golden brown.
Remove chicken and set aside on a plate.
Add minced garlic to the skillet and sauté for 1 minute.
Pour in chicken broth, lemon juice, and zest, stirring to combine.
Add orzo pasta and cherry tomatoes, bringing the mixture to a boil.
Reduce heat, cover, and simmer for 10-12 minutes until orzo is tender.
Return chicken to the skillet and cook for an additional 5 minutes.
Stir in fresh parsley before serving.