Steps
1. Cook the pasta according to package instructions. Drain and set aside.
2. Season the chicken breast with salt and pepper. Grill or pan-fry it until cooked through. Let it cool, then shred it into small pieces.
3. In a large bowl, combine the shredded chicken, cooked pasta, mayonnaise, chopped onion, and diced tomato. Mix well until everything is evenly coated.
4. Serve the creamy chicken pasta warm or chilled. Enjoy!