Hanukkah Chicken

Ingredients

• ["3 lb. skinless, boneless chicken thighs", "1/4 tsp. cayenne pepper", "Kosher salt, freshly ground pepper", "2 lb. russet potatoes, peeled, coarsely shredded on the large holes of a box grater or in a food processor", "1 small onion, peeled, shredded on the large holes of a box grater or in a food processor", "2 Tbsp. matzo meal", "1 large egg", "1/2 cup plus 2 Tbsp. vegetable, canola, or grapeseed oil, divided", "3 Pink Lady apples (about 1 1/2 lb.), sliced into 1/2\" wedges""