Prepare grill, or heat a grill pan over medium-high heat and spray with cooking spray.
Brush chicken with lime juice, then sprinkle with taco seasoning and sugar.
Place chicken on grill and cook 4 minutes per side or until no longer pink. Cool slightly, then cut into 1/4-inch strips and set aside.
Place tortillas on grill, cooking each side for 30 seconds or until golden brown.
Combine shredded cabbage and salsa; toss to coat.
Chop tomatoes and slice olives; gently toss together.
Spread about 2 tablespoons beans over each tortilla, then add the chicken. Top with slaw mixture, tomato mixture, feta cheese, yogurt, and chopped cilantro.
Serve with apple slices on the side.