In a large skillet cook bacon until crisp, transfer to paper towel lined plate
Add beef and onion to the fat in the skillet, increase heat to medium-high, brown beef, drain off fat
Transfer beef mixture to crock pot, add in chili powder, cumin, brown sugar, beans, tomato paste, salsa, and jalapenos. Season to taste with salt and pepper, add in crumbled bacon.
Cover and cook on low for 6-8 hours or high for 3-4 hours