Trim the fat cap from the pork roast and cube to 1/2" - 3/4". Sprinkle with salt and pepper.
Preheat pressure cooker to brown setting.
Add olive oil and bacon and cook for 2-3 minutes. Add half of the cubed pork and cook until all sides are browned for about 4-5 minutes.
Remove pork and bacon to a bowl while leaving drippings in the pot.
Add the second half of the pork and cook until browned. Remove to bowl.
Add onion, jalapeno, salt, and garlic and cook for 3-4 minutes until onions soften and garlic is fragrant.
Add the tomato paste and the seasonings and cook for about one minute, stiring frequently.
Add the beer to deglaze the pot, making sure to scrape all the browned bits of flavor off the bottom.
Add the pork and bacon back into the pot along with the beans and tomatoes. Stir to combine everything.
Lock the lid and set the pressure cooker to high for 25 minutes. At the end of the 25 minutes, open the pressure release valve release the pressure and steam. When it finishes, remove the lid, stir, and let the chili rest for about 10 minutes.
If desired, garnish with choice of sour cream, green onion, red onion, shredded cheddar cheese, jalapeno slices, or crackers.