Preheat oven to 425 degrees. Butter a 9 x 13-inch baking dish.
Melt butter in a skillet over medium heat. Add onions, celery and mushrooms, sauté until tender. Remove from heat.
Meanwhile, bring a large pot of lightly salted water to a boil. Cook pasta in boiling water for 8 to 10 minutes, drain.
In a large bowl, gently toss together cooked noodles, sautéed veggies, 1 cup cheddar cheese, peas, tuna and soups until well combined. Transfer to the prepared baking dish, top with potato chip crumbs and remaining 1 cup cheese.
Bake for 15 to 20 minutes or until cheese is bubbly.