Stir the milk and breadcrumbs together in a small bowl or measuring cup and let sit for 4-5 minutes to create a panade.
While the panade sits, preheat your oven to 400℉ and line a baking sheet with parchment paper or foil.
Add the panade and the remaining ingredients for the chicken nuggets to a mixing bowl and stir to combine.
Spread the breadcrumbs onto a plate.
Scoop around 1 rounded tablespoon of the chicken mixture onto the breading, then flip and coat the other side. Press the nugget to around ½ inch thickness and transfer it to your baking sheet. Repeat with the remaining chicken.
Spray the nuggets with cooking spray. Bake for 16-18 minutes until they are browned and reach an internal temperature of 165℉.
Notes
Store leftovers in an airtight container and refrigerate for up to 4 days.
Reheat leftovers in a 300°F oven for 5-6 minutes until warmed or in the microwave.