Product review (5 stars): Fix burnt out oven bake elements yourself!
Your element is getting ready to go if you find it's begining to lose its shape.

First, locate the model number of your built in oven in the upper right, front facing corner. Use a search engine to find the part number for your element. Type in, for example, "GE Oven Model Lookup." Next, click on 1 of the ads. I used Applicance Parts Pros and typed in model number JKP77G0J3BG. 19 pages of part numbers were returned with the lower element on page one. Type in the part number at Amazon and order it.
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If your oven light is out, replace it at the same time. Take out the old bulb, note the Watts and order a 2 pack of Appliance Bulbs.<a data-hook="product-link-linked" class="a-link-normal" href="/GE-Lighting-15206-40-Watt-Appliance-Light-A15-1CD-Light-Bulb/dp/B000QRDOJG/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">GE Lighting 15206 40-Watt Appliance Light A15 1CD Light Bulb</a>

It's quite easy to install. Plan on 30 minutes if you also take the time to clean the floor of the oven. Be sure to turn off the oven at the breaker box before you begin.