Spread evenly the oil and slices of tomato and onion on a cookie sheet lined with parchment paper or foil.
Lay the chicken pieces flat on top of the veggies slices and sprinkle it again with sea salt, pepper and paprika.
Spread the seasoned chickpeas on top of the chicken trying to fit them in between the chicken pieces. Optional: spread thinly sliced lemon peel, and fresh/dried thyme on the chicken just before baking.
Bake at 375 for 40 minutes.