Roasted Root Vegetable And Chicken Tacos With Chili Mayo

Name: Roasted Root Vegetable And Chicken Tacos With Chili Mayo
Ingredients: For the tacos:; 2 large beets, peeled and chopped into 1 inch pieces; 3-4 large carrots, peeled and chopped into 1 inch pieces; 2 pounds chicken thighs; olive oil; Kosher salt; freshly ground black pepper; 6-8 flour tortillas, warmed up; 1 avocado, sliced thin; 4 ounces feta; cilantro for garnish; For the sauce:; 1/2 cup mayonnaise; 2 teaspoons chili powder; 1/2 teaspoon paprika; juice from 1/2 a lemon