Very likely the problem is a weak Bake igniter. Measure the current drawn by the igniter while it's "on" and if it's 2.5 amps or less than the igniter has to be replaced.
- The part number for the Bake igniter is
AP2014008
Here are the breakdown diagrams and
Replacement parts for GE JGBP33WES1 | AppliancePartsPros.com
Gene.