Cook pasta in salted boiling water according to package directions.
Grill, bake, air fry or cook chicken breast. After chicken is cooked, cut into stripes or cubes and set aside.
While the pasta is cooking, combine in a medium size bowl pesto and Greek yogurt. Stir the ingredients - adding 1 to 2 teaspoons of pasta water if required - until you get a creamy consistency.
Add cooked chicken and chopped tomatoes to the Greek yogurt pesto cream.
When pasta is cooked, drain and add to the protein pesto cream. Give it a good stir until all ingredients are well combined. Adjust with salt and pepper to taste and serve sprinkled with Parmesan cheese, if you desire.