Cook the penne pasta in salted boiling water until al dente.
While the pasta cooks, season and sauté the chicken breasts in olive oil over medium heat.
Add minced garlic and cook for an additional minute.
Incorporate cherry tomatoes and sun-dried tomatoes, stirring occasionally.
Once the chicken is fully cooked, remove it from the pan and slice it.
Combine the cooked penne pasta with the chicken mixture in the pan.
Stir in crumbled feta cheese and oregano, mixing until well combined.
Season with salt and black pepper, adjusting to taste.
Serve topped with fresh basil for garnish.