Steps
1. Cook the pasta according to package instructions. Drain and set aside.
2. In a pan, heat olive oil over medium heat. Add sliced onions and sauté until translucent.
3. Add minced garlic and sliced bell peppers, cooking until softened.
4. Add cubed chicken breast to the pan and season with salt and pepper. Cook until the chicken is browned and cooked through.
5. Stir in diced tomatoes and let simmer for 2-3 minutes until heated through.
6. Combine the chicken and vegetable mixture with the cooked pasta, tossing to combine.
7. Serve hot, garnished with fresh basil leaves.