Season chicken breasts evenly with sea salt, black pepper, and dried oregano.
Grill or pan-sear chicken over medium-high heat for 6 to 8 minutes per side until the internal temperature reaches 165 degrees Fahrenheit.
Allow the chicken to rest for 5 minutes before dicing into 1-inch cubes.
In a large mixing bowl, combine the drained chickpeas, chopped kale, halved cherry tomatoes, diced cucumber, and red onion.
In a separate small container, whisk together the olive oil, lemon juice, and tahini until emulsified.
Distribute the vegetable and chickpea mixture evenly among four airtight meal prep containers.
Top each container with a portion of the diced chicken.
Store the dressing in small separate containers and drizzle over the salad immediately before consumption to maintain texture.