Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Toss the cherry tomatoes with the olive oil, a pinch of sea salt, and black pepper on the baking sheet.
Roast the tomatoes for 12 to 15 minutes until they are blistered and soft.
Season the chicken breast with the remaining salt and pepper, then sear in a non-stick skillet over medium-high heat for 6-7 minutes per side until fully cooked.
While the chicken is cooking, boil the chickpea spaghetti in a pot of salted water according to the package instructions until al dente.
Reserve 2 tablespoons of the pasta cooking water before draining the spaghetti.
In a mixing bowl, whisk together the basil pesto, Greek yogurt, minced garlic, and the reserved pasta water to create a smooth, creamy sauce.
Slice the cooked chicken into thin, bite-sized strips.
Combine the cooked pasta, sliced chicken, and roasted tomatoes in the bowl with the pesto sauce, tossing gently to coat everything evenly.
Garnish with fresh chopped basil and serve immediately while warm.