Preheat the oven to 400°F (200ºC).
On a large sheet of parchment paper, roll dough into a 12-inch circle.
Arrange pear slices on dough, leaving a 2-inch border around the edge.
Fold dough edge over the pears.
In a small microwave-safe bowl, combine jelly and thyme.
Microwave on high until the jelly melts, 10–15 seconds.
Brush jelly mixture over pears and top of dough.
Transfer, on parchment, to a baking sheet.
Bake until dough is browned and pears are tender, about 30 minutes.
