Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Dice the sweet potato into half-inch cubes and drain the chickpeas, patting them dry with a towel.
Toss the sweet potato and chickpeas on the baking sheet with olive oil, smoked paprika, garlic powder, sea salt, and black pepper.
Roast for 20-25 minutes, tossing halfway through, until the potatoes are tender and the chickpeas are slightly crispy.
While the vegetables roast, grill or pan-sear the chicken breast over medium-high heat until cooked through, then slice into strips.
In a small bowl, whisk together the Greek yogurt and lemon juice until smooth to create the dressing.
Place the fresh spinach in a bowl, top with the roasted sweet potatoes, chickpeas, and chicken, then finish with the yogurt drizzle.