Prep the chicken: Slice the chicken breasts in half horizontally to make thinner cutlets. Pat dry and season both sides with salt, pepper, Italian seasoning, and smoked paprika.
Sear for flavor: Heat the olive oil in a large skillet over medium-high.
Add chicken and sear 3–4 minutes per side until golden and just cooked through. Transfer to a plate and tent with foil.
Sauté aromatics: Reduce heat to medium. Add light butter or a splash more oil if needed.
Stir in shallot and cook 2 minutes until softened. Add garlic and cook 30 seconds until fragrant.
Build the sauce base: Stir in sun-dried tomatoes and cook 1 minute. Pour in chicken broth, scraping up any browned bits.
Simmer 2–3 minutes to reduce slightly.
Make it creamy: Lower heat to medium-low. Whisk in evaporated milk (or half-and-half). Let it gently simmer 1–2 minutes.
Remove the pan from heat and whisk in Greek yogurt and Parmesan until smooth.
Add the greens: Return pan to low heat. Fold in spinach until just wilted, about 1 minute. Adjust thickness with a splash of broth if needed.
Finish and season: Return chicken and any juices to the pan, spooning sauce over the top.
Simmer 1–2 minutes. Stir in lemon juice. Taste and adjust salt, pepper, and red pepper flakes.
Serve: Garnish with fresh basil and an extra pinch of Parmesan if you like.
Serve over cauliflower rice, zucchini noodles, steamed green beans, or a small portion of whole-grain pasta.