Pita Panzanella Salad with Meatballs

Preheat oven to 425 degrees F. Coat a large rimmed baking sheet with cooking spray.

Mix together turkey, breadcrumbs, grated onion, egg, 1 Tbsp. fresh oregano (or 1 tsp. dried), 2 tsp. garlic, 2 tsp. oil, salt, and pepper in a large bowl just until combined. Using a tablespoon, form the mixture into about 42 meatballs, each about 1 inch in diameter. Arrange on the prepared baking sheet. Bake the meatballs until browned and an instant-read thermometer inserted in the centers registers 165 degrees F, 10 to 12 minutes.

Split pitas in half horizontally into thin rounds, then tear into half-moon shapes. Arrange on a baking sheet and bake until golden brown and crisp, 5 to 7 minutes. Let cool, then break the pitas into bite-size croutons.

Whisk vinegar, the remaining 3 Tbsp. oil, 2 tsp. fresh oregano (or 1/2 tsp. dried), 1 tsp. garlic, honey, and mustard in a large bowl. Add cucumber, tomatoes, olives, and sliced onion; toss to combine. Stir in the pita croutons. Serve the salad with the meatballs.