Preheat oven to 350°F.
Cook pasta in boiled salted water for 5 minutes; drain and set aside.
Melt butter in a medium saucepan over medium heat.
Add garlic; cook, stirring, 1 minute. Add flour; cook, stirring, 2 minutes.
Gradually whisk in stock, milk, and wine, breaking up any lumps.
Cook, stirring occasionally, until slightly thickened, about 5 minutes.
Stir in lemon zest, salt, pepper, chives, and dill. Set aside.
Stir in cooked noodles, frozen peas, and tuna. Transfer tuna mixture to an 11x7-inch casserole dish.
Top with chips; sprinkle with cheese.
Bake in preheated oven until cheese melts, about 20 minutes.
Garnish with fresh herbs, if desired.