Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Toss the cherry tomatoes with olive oil, a pinch of sea salt, and black pepper on the prepared sheet.
Roast the tomatoes for 12-15 minutes until the skins begin to burst and appear slightly caramelized.
Season the chicken breast with the remaining salt and pepper, then pan-sear in a non-stick skillet over medium-high heat for 6-7 minutes per side until fully cooked.
While the chicken is resting, bring a pot of salted water to a boil and cook the gnocchi until they float to the surface, then drain immediately.
Slice the rested chicken into thin strips or bite-sized cubes.
In the same skillet used for the chicken, reduce the heat to low and whisk together the pesto, Greek yogurt, and minced garlic until a smooth sauce forms.
Add the cooked gnocchi, chicken, and roasted tomatoes to the skillet, tossing gently to coat everything in the creamy pesto sauce before serving.