01 - Heat the oven to 350°F. Line a roasting pan with foil and position a rack inside.
02 - Pat the turkey breast dry using paper towels. Rub olive oil, kosher salt, and black pepper evenly over the surface.
03 - In a small bowl, combine rosemary, lemon zest, lemon juice, and minced garlic. Spread this mixture over the turkey breast, carefully working some under the skin.
04 - Mix chopped nuts, melted butter, and smoked paprika until combined. Press the mixture firmly atop the turkey breast to create a crust.
05 - Place the turkey breast on the rack inside the roasting pan. Roast for 1 hour and 20 to 30 minutes, or until the internal temperature reaches 165°F in the thickest section.
06 - If the nut crust browns excessively during baking, tent loosely with foil halfway through the cooking time.
07 - Remove the turkey from the oven and allow it to rest for 10 to 15 minutes before slicing.
08 - Decorate with rosemary sprigs and lemon slices. Serve warm.