Preheat your oven to 350°F (175°C).
In a large pot, cook the egg noodles according to the package directions until al dente. Drain and set aside.
In a mixing bowl, combine the cream of mushroom soup, milk, garlic powder, onion powder, salt, and pepper. Mix well until smooth.
Add the drained tuna, frozen peas, and half of the shredded cheddar cheese to the soup mixture. Stir until well combined.
Add the cooked noodles to the mixture, stirring gently to incorporate everything evenly.
Transfer the mixture into the casserole dish, spreading it evenly.
In a small bowl, mix together the breadcrumbs, remaining cheddar cheese, and olive oil. Sprinkle the mixture evenly over the casserole.
Bake in the preheated oven for 25-30 minutes, or until the top is golden brown and the casserole is heated through.
Remove from the oven and let it cool for a few minutes before serving.