Harvest Breakfast Pitas

Name: Harvest Breakfast Pitas
Ingredients: 1 cup peeled, seeded, and cubed butternut squash; 1 cup peeled and cubed sweet potatoes; 1 tablespoon olive oil; 1 teaspoon salt; 1 teaspoon ground black pepper; 2 links apple chicken sausage (such as Aidells®), thinly sliced and quartered; 4 eggs; 2 cups fresh baby spinach; 1 tablespoon red pepper flakes, or to taste; 1 cup canned black beans, rinsed and drained; 2 tablespoons goat cheese, or to taste; 2 large whole-wheat pita breads, toasted and halved