Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Rinse and thoroughly pat the chickpeas dry with a paper towel to ensure they get crispy.
Toss the chickpeas with olive oil, dried oregano, and half of the sea salt and black pepper on the prepared baking sheet.
Roast the chickpeas for 20 minutes, shaking the pan halfway through, until they are golden and crunchy.
While chickpeas roast, season the chicken breast with the remaining salt and pepper, then pan-sear in a non-stick skillet over medium heat for 6-7 minutes per side until the internal temperature reaches 165°F.
Let the chicken rest for 5 minutes before slicing or shredding into bite-sized pieces.
Dice the English cucumber and halve the cherry tomatoes.
In a large bowl, combine the roasted chickpeas, shredded chicken, cucumber, and tomatoes.
Drizzle with lemon juice and garnish with freshly chopped parsley before serving.