Bring a pot of well salted water to a boil; cook pasta as directed.
During the last 2-3 minute of cooking the pasta, add the English peas and thinly sliced snap peas to the boiling water. Drain pasta and peas and transfer to a bowl, toss in crispy prosciutto and let cool until room temperature.
While the ingredients are cooling, make the dressing. Whisk together mayo, olive oil, lemon juice, and dijon mustard. Stir in the garlic powder, onion powder and paprika, and season to taste with salt and pepper.
Pour half of the dressing over the pasta and pea mixture; toss to combine. Continuing adding dressing until your desired coating is reached. Finish with fresh lemon thyme leaves and serve.