01 - Season chicken pieces with paprika, salt, and black pepper, coating evenly.
02 - Heat 1 tablespoon butter in a large skillet over medium-high heat. Sauté chicken until golden and cooked through, 5–6 minutes. Remove to a plate and set aside.
03 - Reduce heat to medium. Melt remaining butter in the skillet. Add garlic and onion, sautéing until fragrant and translucent, about 2–3 minutes.
04 - Stir in orzo and toast lightly for 1 minute to enhance flavor.
05 - Pour in chicken broth and milk, stirring constantly and scraping up any browned bits from the bottom of the skillet.
06 - Bring to a gentle simmer. Cook uncovered, stirring occasionally, for 8–10 minutes until orzo is mostly tender and most liquid is absorbed.
07 - Stir in heavy cream and cooked chicken. Add spinach and Pepper Jack cheese, stirring until spinach wilts and cheese melts completely, 2–3 minutes. Taste and adjust seasoning if needed.
08 - Sprinkle with fresh parsley and serve immediately with lemon wedges on the side.