3 tablespoons extra-virgin olive oil
1 large onion, halved and thinly sliced
1 large red bell pepper, seeded and thinly sliced
3 garlic cloves, thinly sliced
1 teaspoon ground cumin
1 teaspoon sweet paprika
⅛ teaspoon cayenne, or to taste
1 (28-ounce) can whole plum tomatoes with juices, coarsely chopped
¾ teaspoon salt, more as needed
¼ teaspoon black pepper, more as needed
5 ounces feta cheese, crumbled (about 1 1/4 cups)
6 large eggs
Chopped cilantro, for serving