Preheat the oven to 425°F. Line a baking sheet with parchment paper and lightly coat the parchment with olive oil spray.
In a shallow dish, whisk together 1/2 cup low-fat milk and 2 large eggs until combined.
In a food processor, combine 4 cups cornflakes (unsweetened), 1 teaspoon smoked paprika, 1/4 teaspoon garlic powder, 1/2 teaspoon sea salt, and 1/4 teaspoon freshly ground black pepper; pulse until you have coarse crumbs. Transfer the crumb mixture to a shallow dish.
If using boneless skinless chicken breasts, cut them into 1-inch strips; if using chicken tenders, leave them whole. Pat the chicken pieces dry with a paper towel.
Working one at a time, dip each chicken piece into the milk-and-egg mixture, allowing excess to drip off, then press firmly into the cornflake crumb mixture so the crumbs adhere. Place each coated piece on the prepared baking sheet in a single layer, making sure pieces do not touch.
Lightly spray the tops of the coated chicken pieces with olive oil spray.
Bake in the preheated oven for 25 minutes, until the coating is golden and crispy and the chicken is cooked through (internal temperature should reach 165°F).
Remove from the oven and let the chicken rest for a few minutes. Sprinkle with finely chopped fresh parsley and serve.