01 - Heat the olive oil in a large skillet over medium heat.
02 - Add the diced onion and sauté for 2–3 minutes until softened.
03 - Stir in the garlic and cook for 30 seconds, until fragrant.
04 - Add the ground chicken, breaking it up with a spatula. Cook for 5–6 minutes until browned and cooked through.
05 - Mix in the red bell pepper and cherry tomatoes. Cook for 3–4 minutes until vegetables begin to soften.
06 - Sprinkle in the oregano, smoked paprika, red pepper flakes (if using), salt, and black pepper. Stir to combine.
07 - Add the baby spinach, stirring until wilted, about 1–2 minutes.
08 - Scatter the olives and feta over the skillet. Reduce heat to low, cover, and cook for another 2 minutes to warm the cheese and meld flavors.
09 - Remove from heat. Garnish with chopped parsley if desired. Serve hot.