Add oil and paprika to a large bowl. Add chicken and toss to coat. Heat a large nonstick skillet over medium-high heat. Add chicken and cook until browned. Transfer to a plate. Add bacon to pan and cook until golden brown and crispy. Transfer to a plate.
Place the cornflour and mustard powder in a slow cooker. Gradually whisk in the stock until both the mustard and honey are smooth. Add the chicken and bacon to the cooker and stir gently. Add the peas and cream during the last 10-15 minutes of cooking and cook on low for 4.30 hours (or 2 hours longer).
Serve the chicken sprinkled with parsley.