Begin by patting the chicken thighs dry with paper towels.
Lightly season them with salt and pepper.
Coat each piece with flour, dusting off any excess.
In a large, hot skillet, heat the olive oil over medium heat.
Brown the chicken thighs on both sides, around 3-4 minutes per side until golden.
Remove chicken and set aside.
Add onions, celery, carrots, and mushrooms to the skillet.
Sauté until onions are translucent and vegetables are slightly softened.
Pour in the red wine to deglaze the skillet.
Simmer for 5 minutes, scraping up any browned bits for extra flavor.
Transfer browned chicken and sautéed veggies to a slow cooker.
Add baby potatoes and chicken broth, distributing evenly.
Cover and cook on low for 6 hours or until chicken is tender.