Season the chicken with smoked paprika, Italian seasoning, salt, and pepper. Heat olive oil in a large pan over medium-high heat. Sear the chicken until golden and fully cooked. Remove from the pan and set aside.
Meanwhile, bring a large pot of salted water to a boil. Cook the pasta until it’s just shy of al dente. Reserve 2 cups of pasta water before draining.
While the pasta cooks, whisk together ricotta cheese, parmesan, lemon juice, lemon zest, and 1 cup of reserved pasta water in a bowl. Blend until smooth, adding more water if needed to achieve a creamy consistency.
Using the same pan you cooked the chicken in, sauté crushed garlic in the leftover oil. Pour in the ricotta mixture and stir continuously. Scrape the bottom of the pan to incorporate all those delicious chicken drippings. Cook on low until the sauce thickens slightly.
Add the cooked pasta, spinach (if using), and bacon bits to the pan. Stir until everything is well coated in the creamy sauce. Slice the chicken and either mix it in or serve it on top.
Garnish with extra parmesan, fresh herbs, and a crack of black pepper. Serve immediately for best results.