Place the chicken breasts in a saucepan and cover with water. Bring to a gentle boil, reduce the heat, and simmer for 12–15 minutes or until the internal temperature reaches 165°F (74°C).
Transfer the cooked chicken to a cutting board and let it rest for 5 minutes.
Dice the chicken into bite-sized pieces.
Wash and dice the cucumber.
Finely chop the red onion.
Chop the fresh cilantro or parsley.
Add the chicken, cucumber, onion, and herbs to a large mixing bowl.
Season with garlic powder, paprika, salt, and black pepper.
Squeeze the fresh lemon juice over the salad.
Gently toss until all ingredients are evenly coated.
Taste and adjust the seasoning if needed.
Serve immediately, or refrigerate for 20–30 minutes before serving for the best flavor.