Heat a large skillet over medium heat for 2–3 minutes.
Season chicken strips with 1 tbsp olive oil, paprika, oregano, salt, and pepper.
Add the remaining 2 tbsps olive oil to the skillet. Add chicken in a single layer and cook for 3–4 minutes, turning occasionally, until golden and cooked through. Remove from the skillet, leaving juices.
Add orzo and garlic to the same skillet. Toast for 2 minutes, stirring.
Add chicken stock, lower the heat, and cook uncovered for 8–10 minutes, stirring occasionally, until orzo is tender and most liquid is absorbed.
Stir in tomatoes, olives, and lemon juice. Cook on low heat for 2–3 minutes. Season to taste.
In a bowl, mix feta, olive oil, oregano, black pepper, and half the basil.
Return chicken to the skillet and warm for 1–2 minutes.
Top with the feta mixture and the remaining basil. Serve.