Preheat your oven to 350°F (175°C).
Cook the egg noodles according to package instructions until al dente. Drain and set aside.
In a large mixing bowl, combine the drained tuna, cream of mushroom soup, frozen peas, shredded cheddar cheese, milk, garlic powder, onion powder, and black pepper. Stir until well combined.
Add the cooked egg noodles to the mixture and gently fold until the noodles are evenly coated.
Transfer the mixture to a greased 9x13 inch baking dish and spread it out evenly.
In a small bowl, mix the crushed potato chips with the melted butter. Sprinkle the mixture evenly over the top of the casserole.
Bake in the preheated oven for 25-30 minutes, or until the casserole is bubbly and the top is golden brown.
Let it cool for a few minutes before serving.