Hatch Chile Cream Cheese Dip

Name: Hatch Chile Cream Cheese Dip
Ingredients: 1 Hatch green chile or 1 cup canned diced Hatch chiles; 1 tablespoon canola oil; 1/2 cup finely chopped scallions, white and light green parts only, plus 2 tablespoons sliced dark green parts, for garnish (4 to 5 scallions); 1 pound cream cheese, at room temperature; Kosher salt and freshly ground black pepper; 1/2 cup sour cream; 2 cups Mexican blend shredded cheese (8 ounces); 1 teaspoon lime zest (2 limes); Blue and white tortilla chips, for serving