NOPE
Can I make a fireplace in an oven?
No, putting a fireplace inside your oven is a fantastic way to ruin your cooking and your kitchen.
Trying to build a fireplace inside your oven is a terrible idea. Ovens are designed for controlled heat distribution, not open flames. A fireplace inside an oven would likely destroy it, create a fire hazard, and produce toxic fumes. Stick to using your oven as intended, and keep fireplaces where they belong—outside or in a proper hearth designed for them.