Optional: if you prefer, trim the tendon from the chicken tenders. I find this the easiest to do with kitchen scissors but a sharp knife works as well.
Soak the chicken: In a bowl, add the dairy free milk and white vinegar to create a dairy free buttermilk. Add the chicken tenders and mix to combine. Set aside in the fridge for 30 minutes.
Prepare your crumb station: gather three shallow bowls and into one, mix together the plain flour, garlic powder, onion powder, smoked paprika, salt and pepper.
In a second bowl, whisk together the eggs. Finally in the third bowl, combine the panko breadcrumbs, garlic powder, onion powder, salt and pepper.
Coat the chicken: working with one at a time, allow any excess milk to drip off the chicken tenderloin before dredging it through first the flour, then the egg and finally the breadcrumbs. Use your hand to press the breadcrumbs into the chicken to ensure it sticks. Set aside on a plate and repeat with the remaining tenders.
Cook the chicken: preheat the air fryer at 200°C/400°F for 5 minutes. Spray the basket with cooking oil and place the chicken tenders in the bottom, leaving a slight gap between them so that the air can circulate. You will likely need to do this step in batches depending on the size of your air fryer.
Give the top of the chicken tenders a spray with the cooking oil and then cook for 10-12 minutes depending on the size and thickness of your chicken, turning halfway through. The chicken is cooked when the internal temperature reaches 75°C/165°F.
Serve the chicken tenders immediately while still hot and crispy with honey mustard dipping sauce (recipe in notes).