Season chicken with salt, pepper, paprika, and Italian seasoning. In a skillet, melt 2 tbsp butter over medium heat, then cook chicken for 4–5 minutes until golden and cooked through.
Lower heat, add garlic, lemon zest, and juice. Cook for 1–2 minutes until fragrant. Remove chicken and set aside.
Boil linguine in salted water until al dente. Reserve 1/4 cup pasta water, then drain.
In the same skillet, melt remaining 1 tbsp butter. Add cream and garlic powder; stir until smooth. Whisk in Parmesan until creamy. Season to taste.
Add pasta to sauce and toss to coat. Use pasta water to loosen sauce if needed. Top with chicken, parsley, and extra Parmesan.