Chicken Shawarma Seven Layer Dip

Name: Chicken Shawarma Seven Layer Dip
Ingredients: 1/2 pound boneless, skinless chicken thighs; 4 garlic cloves, minced; 2 tablespoons fresh lemon juice; 2 tablespoons Middle Eastern Seasoning (click for recipe); For the Yogurt Sauce:; 3/4 cup Greek yogurt; 1/4 cup shredded cucumber; 1 tablespoon chopped fresh dill; 1 tablespoon fresh lemon juice; Pinch of kosher salt and ground black pepper; For the Seven Layer Dip:; 1 cup prepared hummus; 1/2 cup crumbled feta cheese; 1/4 cup chopped red onion; 1 cup shredded romaine lettuce; 2 Roma tomatoes, chopped; Pita chips, for serving