Place the bacon in a large, deep skillet and fry over medium-high heat, turning occasionally, until evenly browned and crispy, about 10 minutes. Remove the bacon slices and set the crumble aside. Leave the bacon bits in the pan. Combine mashed potatoes, eggs, onion powder, salt, and black pepper in a bowl.
Add crumbled bacon and cheddar cheese and mix. Shape the mixture into 8 patties. Heat the bacon fat over medium heat and fry the patties until crispy, about 4 minutes on each side.