Fried Mortadella Sandwich

Ingredients (10)

• + 2 tablespoons olive oil, divided add to pantry
• + 4 cups diced potatoes add to pantry
• ✓ 1 onion, sliced
• + 1 cup diced pimiento peppers add to pantry
• + 1 pound sliced mortadella sausage add to pantry
• + 4 Italian-style hoagie buns, split lengthwise add to pantry
• + ¼ cup spicy brown mustard add to pantry
• + 8 slices Swiss cheese add to pantry
• + 8 slices Asiago cheese add to pantry
• ✓ 8 eggs