Preheat 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 become crunchy.
Cut the chicken breast into uniform 1-inch cubes for even roasting.
In a large mixing bowl, combine the chicken cubes and dried chickpeas with the olive oil, rosemary, thyme, garlic powder, sea salt, and black pepper.
Toss thoroughly until every piece is well-coated in the herb and oil mixture.
Spread the mixture in a single layer on the prepared baking sheet, ensuring no pieces are overlapping.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken is cooked through and the chickpeas are golden and crisp.