Preheat oven to 425°; slice ½ the pack of potatoes + ½ an onion into thin slices

Place 2 large pieces of foil on a sheet pan + oil the foil; pat chicken breasts dry + slice; toss potatoes + onions with 2 tbsp oil, salt/pep + 1 tbsp seasoning, then add to the center of each piece of foil with 1 tbsp water; arrange chicken slices on top

Bring the long edges of foil together + roll to seal, leaving 1-inch of space above ingredients; repeat with side ends of foil—your pack is sealed!

Bake 20-25 min until potatoes are tender; dollop each with 1-2 tbsp sauce + serve (watch out for steam when opening!