Heat oven to 400°F. Spray large cookie sheet with cooking spray.
In shallow bowl, beat egg. In large resealable food-storage plastic bag, mix bread crumbs, chile powder, lime peel and garlic salt. Dip chicken into egg. Place in bread crumb bag; seal and shake to coat. Place chicken on cookie sheet.
Bake 15 to 20 minutes, turning once, until chicken is no longer pink and bread crumbs are golden brown. Serve with yogurt and lime slices.