Swiss Chard Gnudi with Tomatoes

Name: Swiss Chard Gnudi with Tomatoes
Ingredients: 2/3 cup all-purpose flour, plus more for dusting; Kosher salt; 1 pound Swiss chard, stems removed; 1 1/2 cups whole-milk ricotta cheese; 1/2 cup Parmesan cheese, plus more for topping; 1 large egg, plus 2 egg yolks; Zest of 1 lemon, 1/2 finely grated, 1/2 removed in wide strips; Freshly ground black pepper; 1/4 cup extra-virgin olive oil, plus more for drizzling; 1 large clove garlic, thinly sliced; 1 pound cherry tomatoes; 2 tablespoons tomato paste; Pinch red pepper flakes; 1 tablespoon lemon juice