Begin by shredding the cooked chicken breast into small, bite-sized pieces using two forks or your hands. Smaller pieces help the filling mix evenly and make the lettuce wraps easier to eat. If the chicken is freshly cooked, allow it to cool slightly before handling.

Place the shredded chicken into a medium mixing bowl large enough to comfortably combine all of the ingredients without spilling.

Add the plain Greek yogurt and ranch seasoning directly to the bowl with the chicken. The Greek yogurt creates a creamy texture while adding extra protein, and the ranch seasoning provides plenty of flavor without needing additional dressing.

Stir everything together thoroughly until all of the chicken is evenly coated. Continue mixing until the filling looks creamy and well combined, with the ranch seasoning distributed throughout the mixture. Taste and adjust seasoning if desired.

Allow the chicken mixture to sit for a few minutes while you prepare the remaining ingredients. This gives the ranch seasoning time to blend with the yogurt and develop a richer flavor.

Wash the romaine lettuce leaves carefully under cold running water, making sure to remove any dirt trapped between the leaves. Choose the largest and most intact leaves, as they work best as wraps.

Pat the lettuce leaves completely dry with paper towels or use a salad spinner. Removing excess moisture helps keep the wraps crisp and prevents the filling from becoming watery.

Wash the cucumber thoroughly and trim the ends. Dice it into small, even pieces so it can be evenly distributed across the wraps and provide a refreshing crunch in every bite.

Arrange the romaine lettuce leaves on a large serving plate or platter, placing them side by side with the cupped side facing upward. This makes filling them much easier.

Divide the ranch chicken mixture evenly among the lettuce leaves. Spoon the filling into the center of each leaf, leaving a little room around the edges so the wraps are easier to hold and eat.

Sprinkle the diced cucumber evenly over the chicken filling. The cucumber adds freshness, texture, and a light crunch that complements the creamy ranch chicken perfectly.

Check that the filling is evenly distributed among all of the wraps so each serving contains a balanced amount of protein and vegetables.

If desired, gently fold the sides of the lettuce leaves inward or roll them slightly to help keep the filling contained. Romaine leaves are naturally sturdy and work well as handheld wraps.

Serve immediately while the lettuce is crisp and fresh. The contrast between the cool lettuce, creamy ranch chicken, and crunchy cucumber creates the best texture when eaten right away.

If you have leftovers, store the chicken mixture separately from the lettuce leaves in airtight containers. Keeping them separate helps maintain the crisp texture of the lettuce.

Refrigerate the ranch chicken mixture for up to 4 days. It actually develops even more flavor as it sits, making it excellent for meal prep.

When ready to enjoy again, wash and prepare fresh lettuce leaves, then fill them with the chilled chicken mixture and cucumber just before serving for the freshest and most satisfying lettuce wraps.