How to Make It
Place first 3 ingredients in a medium bowl; mash with a fork until smooth. Stir in tomato.
Place 1 lettuce leaf on each tortilla; spread about 1/4 cup avocado mixture on each lettuce leaf. Top each serving with 1/2 cup Grilled Lemon-Herb Chicken. Roll up. Wrap in foil or parchment paper; chill.