Crab and Chile Ravioli with Mornay Sauce

Name: Crab and Chile Ravioli with Mornay Sauce
Ingredients: 1 tablespoon butter; 1 tablespoon olive oil; 1 jalapeno, seeded, finely diced; 1 Fresno chile, seeded, finely diced; 1 large shallot, finely diced; Kosher salt and freshly ground black pepper; 3 to 4 cloves garlic, grated or minced; 1/4 to 1/2 cup sherry or dry vermouth; 8 ounces lump crabmeat, picked through for shells; 1/2 cup combined chopped fresh chives, oregano, parsley and thyme, some reserved for garnish; 2 tablespoons butter; 2 tablespoons flour; 2 cups milk; Freshly grated nutmeg; 1 cup grated Gruyere; 4 sheets fresh pasta, cut into 12- to 14-inch pieces, covered with a clean dish towel until ready to use; Semolina, for dusting; Zest of 1 lemon, for garnish