Place chicken tenders in a resealable plastic bag.
Combine mayonnaise, chipotle powder, lime juice, lime zest and salt together in a bowl. Pour over chicken. Toss to coat. Close and refrigerate for 4 hours or over night.
Preheat oven to 425 degrees.
Whisk together the egg and milk. In another bowl combine panko, oil, remaining salt and garlic powder until panko is coated well.
Remove chicken from marinade. Dip the chicken in egg and milk. Dredge chicken the panko mixture. Place on a baking sheet. And bake in preheated oven for 15 minutes. Turn and bake for another 10 - 15 minutes or until chicken is golden brown and cooked through.