Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Drain and rinse the chickpeas, then pat them very dry with a paper towel to ensure they get crispy.
Cut the chicken breast into small, even cubes and place them on the baking sheet along with the dried chickpeas.
Drizzle the olive oil over the chicken and chickpeas, then sprinkle with oregano, thyme, garlic powder, sea salt, and black pepper.
Toss everything together until well-coated and spread into a single layer on the pan.
Roast in the oven for 20 to 25 minutes, or until the chicken is cooked through and the chickpeas are golden and crunchy.
Place the baby spinach in a serving bowl and top with the warm roasted chicken and chickpea mixture.
Finish the dish with a fresh squeeze of lemon juice for a hit of acidity before serving.