Pat chops dry; add salt and pepper. Heat oil in skillet; brown in two batches 2 minutes per side. Transfer to 6-quart slow cooker.
Cook onion, bell pepper, and celery in skillet 5 minutes. Add garlic 30 seconds; stir in tomatoes, broth, Worcestershire, paprika, thyme, cayenne, and bay. Scrape browned bits.
Pour vegetables over chops. Cover; cook on low 6 hours until fork-tender. Pork must reach at least 145°F; marbled blade chops usually reach around 190°F as connective tissue softens.
Carefully platter chops; remove bay. If watery, transfer sauce to saucepan; simmer 5 to 10 minutes until lightly thickened.
Rest pork at least 3 minutes after lifting; spoon hot sauce around chops and serve.