In a large skillet, heat the olive oil over medium-high heat. Season the chicken breasts with salt and pepper, then place them in the skillet. Sear for about 5-7 minutes on each side until golden brown and cooked through. Remove the chicken and set aside.
In the same skillet, add the diced red bell pepper and minced garlic. Sauté for 2-3 minutes until the bell pepper is tender.
Stir in the orzo pasta and pour in the chicken broth. Add the balsamic vinegar and dried Italian herbs. Mix well to combine.
Bring the mixture to a boil, then reduce the heat to low. Cover and simmer for about 10-12 minutes, or until the orzo is cooked and most of the liquid has been absorbed.
While the orzo cooks, slice the seared chicken into strips.
Once the orzo is cooked, gently fold in the cherry tomatoes and sliced chicken. Cook for an additional 2-3 minutes until the tomatoes are just warmed through.
Adjust seasoning with additional salt and pepper to taste.
Serve the dish warm, garnished with fresh basil leaves for an aromatic touch.