Boil the noodles in a large pot of salted water according to package directions; drain. Arrange the noodles on baking sheets that have been lightly sprayed with nonstick cooking spray to prevent the noodles from sticking.
Preheat oven to 350°F. Grease a deep 9 x 13-inch baking dish; set aside.
In a medium bowl, stir together the ricotta, Parmesan, egg, and pepper. Set aside.
In a large bowl, whisk together Alfredo sauce and parsley, chives, dill, garlic powder, and onion powder. Spread 1 cup of sauce in the bottom of the prepared dish. Top with a layer of lasagna noodles (3-4 noodles, depending on the size and shape of your dish).
Top the noodles with ⅓ of the ricotta mixture, about ⅓ of the chicken, and about ⅓ of the broccoli. Add an additional 1 cup of sauce, and sprinkle 1 cup of cheddar over top.
Repeat the layers two more times in the following order: noodles, ricotta, chicken, broccoli, sauce, and cheddar.
Top with a final layer of lasagna noodles, remaining 1 cup of sauce, and remaining 1 cup of cheddar.
Cover with greased foil; place on a rimmed baking sheet (to catch drips if it bubbles over); bake for 40 minutes. Uncover; bake for 20-30 more minutes, or until browned on top and bubbly. If you’d like it even darker and crispier on top, place the dish under the broiler for a few minutes at the end. Let stand at least 15 minutes before slicing and serving.