In large bowl, combine lamb, salt, pepper, paprika, cumin, coriander, garlic, parsley, and oregano. Form into 12 small patties and refrigerate covered for 30 minutes.
Heat grill/grill pan over high heat.
Brush tomato marinade over both sides of lamb patties and grill until browned on each side and cooked through, about 4 minutes per side.
Remove patties to rest.
Brush onion with marinade, season with salt and pepper, and grill until browned on each side and softened, about 5 minutes per side. Set aside.
Lightly toast cut sides of rolls.
Spread tzatziki on bottom half of roll and top with lamb burger. Garnish with grilled onion, a couple of roasted tomatoes, and follow with top of bun.
Skewer olives with toothpicks and push through burgers to hold everything together.
Prep: 10 minutes
Refrigerate: 30 minutes
Cook: 10 minutes
Makes: 4 servings