Preheat your oven to 400°F (200°C) to ensure even cooking and crispiness.
Cut the boneless skinless chicken breasts into even 1-inch cubes for uniform cooking.
In a large bowl, season the chicken cubes with salt and freshly ground black pepper.
In a separate bowl, whisk the two large eggs until well combined. In another bowl, mix the panko bread crumbs, olive oil, paprika, garlic powder, dried thyme, and cayenne pepper (if using).
Dip each chicken cube into the egg mixture, then coat it in the breadcrumb mixture, pressing the breadcrumbs onto the chicken.
Line a baking sheet with parchment paper and place the coated chicken nuggets in a single layer.
Bake for 15-20 minutes, flipping halfway through, until golden brown and cooked through.
Remove from the oven and let cool for a few minutes. Serve with your favorite dipping sauces.
