Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Season the chicken breast evenly with garlic powder, dried oregano, black pepper, and the first portion of sea salt.
Place the chicken on the baking sheet and roast for 18 to 22 minutes, or until the internal temperature reaches 165°F.
While the chicken is roasting, place the popcorn kernels into an air-popper and pop into a large bowl.
In a small saucepan or microwave-safe dish, gently melt the grass-fed butter until liquid.
Drizzle the melted butter over the warm popcorn and sprinkle with the remaining sea salt, tossing well to ensure even coverage.
Remove the chicken from the oven and let it rest for 5 minutes before slicing into strips.
Serve the herb-roasted chicken alongside the buttery popcorn for a high-protein, clean-eating take on a classic snack.