Gather the ingredients together and prep them. chop the onion, potatoes, red pepper, and measure out everything you will need.
Heat a skillet and add the chopped bacon. Cook until it starts to render some of the fat. Then add the onion and cook, stirring occasionally, until the onion has softened.
Drain some of the fat. Add the bacon-onion mixture to the slow cooker crock.
Add the chicken, then add the salt, pepper, thyme, bay leaf, chili powder, cumin, paprika, and garlic on top of the chicken.
Add the potato and the red bell pepper.
Pour in the chicken broth. Stir well.
Cover the slow cooker and cook on Low for 3 hours, or until the chicken is cooked and the potatoes are tender.
Remove the chicken to a bowl and use 2 forks to shred it. Cover and set aside.
Whisk together the flour and heavy cream until smooth and stir into the chowder. Cook another hour.