01 - Toss cubed chicken breasts with paprika, salt, and black pepper until evenly coated.
02 - Heat 1 tablespoon butter in a large skillet over medium-high heat. Add seasoned chicken and cook until golden brown and cooked through, approximately 5–6 minutes. Transfer to a plate and set aside.
03 - Reduce heat to medium. Melt remaining 2 tablespoons butter in the same skillet. Add minced garlic and chopped onion; cook until fragrant and translucent, about 2–3 minutes.
04 - Stir in uncooked orzo pasta and toast lightly for 1 minute, stirring constantly to prevent burning.
05 - Pour in chicken broth and whole milk, stirring to deglaze the pan and incorporate any browned bits from the bottom.
06 - Bring mixture to a gentle simmer. Cook uncovered, stirring occasionally, for 8–10 minutes until orzo is tender and most liquid has been absorbed.
07 - Stir in heavy cream and reserved cooked chicken. Add chopped spinach and Pepper Jack cheese; continue stirring until spinach wilts and cheese melts completely, 2–3 minutes.
08 - Taste and adjust salt and pepper as needed. Garnish with fresh parsley and serve immediately with lemon wedges on the side.