1. Preheat oven to 450°. Combine breadcrumbs and next 5 ingredients in a shallow pan. Place 1 tablespoon of olive oil in a small dish and brush each goat cheese slice with oil. Dredge each slice in breadcrumb mixture, and place on a baking sheet, leaving 1/2 inch between slices.
2. Bake for 8–10 minutes. Remove from oven. While the cheese is baking, toss greens with vinegar, apple slices, and remaining teaspoon olive oil in a large salad bowl.
3. Transfer to 6 salad plates. Top each plate of salad greens and apples with 2 goat cheese medallions. Serve with flatbread while cheese is warm.