Boil a large pot of salted water and cook the pasta according to package instructions until al dente.
While pasta cooks, heat olive oil in a large skillet over medium heat.
Add sliced chicken breasts to the skillet and season with salt and pepper.
Sauté chicken until golden brown and cooked through, about 7-8 minutes.
Reduce heat to low and stir in basil pesto and heavy cream.
Mix until well combined and heated through.
Drain the cooked pasta, reserving a bit of pasta water.
Add the drained pasta to the skillet with the chicken and pesto sauce.
Toss gently to coat the pasta in the sauce, adding reserved pasta water if needed.
Stir in cherry tomatoes and garnish with fresh basil before serving.