Follow these simple steps to create your own Creamy Pesto Chicken with Roasted Tomatoes:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare the Tomatoes: In a baking dish, toss the halved cherry tomatoes with olive oil, garlic powder, salt, and pepper. Spread them evenly in the dish.
3. Roast the Tomatoes: Place the baking dish in the oven and roast the tomatoes for about 15 minutes, or until they are soft and slightly caramelized.
4. Cook the Chicken: While the tomatoes are roasting, heat a large skillet over medium-high heat. Season the chicken breasts with salt and pepper.
5. Sear the Chicken: Add the chicken breasts to the skillet and cook for about 5-7 minutes on each side, or until golden brown and cooked through. Remove the chicken from the skillet and set aside.
6. Make the Sauce: In the same skillet, reduce the heat to medium and pour in the heavy cream. Stir in the basil pesto and cook for about 2 minutes, allowing the sauce to thicken slightly.
7. Combine: Return the cooked chicken to the skillet, spooning the creamy pesto sauce over the top. Cook for an additional 2-3 minutes to heat through.
8. Add Tomatoes: Once the tomatoes are done roasting, remove them from the oven and add them to the skillet, gently mixing to combine.
9. Serve: Remove from heat and garnish with fresh basil leaves and grated Parmesan cheese if desired.

These straightforward instructions will guide you in creating an exquisite meal that is both indulgent and comforting!