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