Winter Panzanella With Roasted Chicken and Squash

Name: Winter Panzanella With Roasted Chicken and Squash
Ingredients: 1/2 cup extra-virgin olive oil, divided; 4 bone-in, skin-on chicken thighs (about 1 3/4 lb. total); 2 tsp. kosher salt, divided; 1 tsp. freshly ground black pepper, divided; 1 medium delicata squash, halved lengthwise and cut into 1/2-inch-thick slices; 6 cups torn sourdough bread; 1/4 cup red wine vinegar; 1 Tbsp. Dijon mustard; 1/4 tsp. crushed red pepper; 1 small shallot, finely chopped (about 3 Tbsp.); 1 large garlic clove, grated (1/2 tsp.); 3 cups torn escarole; 4 oz. Parmesan cheese, shaved (about 1 1/4 cups)