Steam your noodles: Place noodles in a metal baking pan with sides, making sure to spread out. Pour steaming-hot salted water over the top, moving noodles around a bit to be sure the water gets between them. Cover tightly with aluminum foil and let rest for 20 to 25 minutes. When ready to assemble, remove one at a time as you go and pat dry.
Make the filling: Add the ricotta, cheese blend, basil, parsley, red chile flakes, egg, lemon zest, a pinch of salt and a few hefty grinds of black pepper to a large bowl. Stir to combine.
Assemble: Preheat the oven to 375 degrees F.
Add half the tomato sauce to a 9-by-13-inch baking dish and spread or tilt to even it out. Take one lasagna noodle and lay flat on the counter, then add a scoop of filling to the center and spread it along the length. Roll up the noodle and place it standing on end in the dish, nestling the rolls together as you go to hold the seams secure. Repeat with the rest of the noodles until the dish is full. Pour over remaining tomato sauce and spread to even out. Cover dish with aluminum foil.
Bake until sides are bubbly and a few edges are golden, about 20 minutes. Uncover and cook until edges begin to brown, another 5 to 10 minutes. Garnish with Parmesan and more herbs.