Cook pasta according to box instructions. Drain and set aside.
While pasta is cooking, slice chicken into bite-sized pieces and place in a bowl. Drizzle with 1 Tbls. olive oil and lemon pepper seasoning. Mix well. Next, place a large skillet over medium-high heat and add remaining olive oil. Sear chicken until completely cooked through, 7-10 minutes. Remove and set aside.
Deglaze the skillet with the wine, scraping the bottom. Add the cream, mascarpone, pesto, lemon zest and 1 tsp. of salt and pepper. Stir to combine and bring to a simmer. Continue simmering for 1 to 2 minutes and allow the sauce to thicken slightly. Add the pasta to the sauce along with the frozen peas and the chicken with any juices. Stir and heat through until the sauce has thickened a little more and everything is combined, about 2 minutes. Taste and adjust the seasoning as needed. Garnish with the basil and lemon slices.
Recipe by Tonja's Table at https://tonjastable.com/2021/09/creamy-lemon-pepper-chicken-pasta-w-basil/