This recipe, courtesy of Lost Kitchen chef and owner Erin French, works best with narrow, long, bright-yellow zucchini.
Preheat oven to 425 degrees. Toss squash ribbons with 2 tablespoons oil; arrange in a single layer on a rimmed baking sheet and season with salt and pepper. Roast just until tender, about 8 minutes. Let cool completely, about 20 minutes.
Meanwhile, in a bowl, combine shallot and vinegar; let stand 15 minutes. Whisk in remaining 1/4 cup oil and hazelnuts; season with salt and pepper.
In a bowl, combine ricotta, herbs, Pecorino Romano, and lemon zest; season with salt and pepper. Place 3 arugula leaves crosswise on one end of each squash ribbon. Top with about 1 1/2 tablespoons ricotta filling. Roll squash up to create a little bundle, and place, seamside down, on a platter. Repeat with remaining squash, arugula, and filling. Serve, drizzled with vinaigrette.