Addictive Asparagus

Ingredients

• 4 ounces pancetta, 1/4 inch dice
• 1 tablespoon butter
• 1 lb asparagus, sliced into 2 inch pieces on bias, woody ends snapped off
• 1 1/4 cups leeks, thinly sliced crosswise (white and pale green parts only)
• 2 garlic cloves, minced
• fresh lemon zest, of one whole lemon
• 1 teaspoon orange zest
• 2 tablespoons pine nuts, toasted
• 2 tablespoons Italian parsley, chopped
• salt & freshly ground black pepper