Sunnys Easy 7 Layer Gyro Dip

Name: Sunny’s Easy 7-Layer Gyro Dip
Ingredients: 1 tablespoon olive oil; 1/4 cup finely grated white onion (on the smallest holes of the box grater); 1 large clove garlic, grated on a rasp; 1 teaspoon chopped fresh oregano; 1 pound ground lamb; 1 teaspoon kosher salt; Freshly ground black pepper; 8 ounces roasted garlic or red pepper hummus; 4 ounces feta, crumbled; 4 plum tomatoes, seeded and diced small; 1/2 English cucumber, seeded and diced small; 8 ounces tzatziki dip (store-bought or homemade); 2 teaspoons finely chopped fresh dill; Pita chips, for serving