Greek Goulash

Name: Greek Goulash
Ingredients: 6 pita rounds; Olive oil cooking spray; 2 tablespoons extra-virgin olive oil; 1 1/2 pounds ground sirloin or lamb; Black pepper; 1 teaspoon dried oregano or 2 sprigs fresh, finely chopped; 2 pinches ground cinnamon; 1 onion, chopped; 4 cloves garlic, grated; 1 small eggplant, peeled and chopped into 1/4-inch dice; 1 box frozen spinach, 10 ounces, defrosted and wrung dry in towel; 1 (15-ounce) can tomato sauce; 1/2 cup pitted, chopped kalamata black olives; 1 lemon, zested; 1/2 cup chopped flat-leaf parsley; 1/2 pound orzo pasta; 1 1/2 cups crumbled feta cheese