Winter Salad With Roasted Pumpkin and Feta in an Egg Yolk Dressing

Name: Winter Salad With Roasted Pumpkin and Feta in an Egg Yolk Dressing
Ingredients: For the salad:; 1 small pumpkin (or any winter squash, such as cheese pumpkin, butternut, or acorn squash); 2 tablespoons extra-virgin olive oil; Salt and pepper, to taste; 1 tablespoon crushed red pepper flakes; 1 head of radicchio, outer leaves and root removed; 1 cup cooked or 1 can drained chickpeas; 1/2 cup feta, crumbled; For the egg yolk dressing:; 2 egg yolks, preferably from free-range eggs; 2/3 cup extra-virgin olive oil; 1/2 teaspoon mustard; 2 tablespoons fresh-squeezed lemon juice