Pre-heat oven to 400˚ F.
In a large ovenproof skillet, heat oil over medium-high heat. Add onion,cook until softened, about 5 to 8 minutes.
Add tomato paste and cook until it darkens slightly, about 2 minutes.
Stir in cumin, garlic, smoked paprika, and red pepper flakes; cook for about 30 seconds.
Add roasted red peppers and tomatoes with juice. Simmer about 2 minutes. If necessary, season with sea salt, to taste.
Using the back of a spoon, make 6 indentations in the tomato sauce and crack 1 egg into each well.
Then, place marinated ciliegine cheese throughout the tomato sauce. (Reserve remaining marinade for crostini.)
Transfer the pan into the oven; bake until egg whites are set but the yolks are still soft, about 8 minutes. The mozzarella will just begin to melt.
Sprinkle with fresh parsley and a few turns of freshly ground black pepper. Serve immediately with prepared crostini.