Lemony Arugula Spaghetti Cacio e Pepe

INGREDIENTS

Kosher salt

12 oz

dried spaghetti

1/4 lb

(about 3/4 cup) pancetta or bacon, finely diced

1/4 cup

extra-virgin olive oil

3 tbsp

(about 4 big cloves) minced garlic

1 tsp

red pepper flakes, plus more to taste

2 tsp

freshly ground black pepper, plus more to taste

1/4 cup

fresh lemon juice

1 1/2 cups

freshly grated Parmigiano-Reggiano cheese, plus more for serving

3 cups

baby arugula