Squash in Egypt

I have a butternut squash tart recipe, but would like to add some chicken to it. I’m not very culinary aware so any advice would be helpful. The summerised recipe is as follows, but not sure whether chicken is even appropriate?

Caramelised onion and Butternut Squash Tart

4 teaspns olive oil
3 yellow onions, thinly sliced
salt and freshly ground black pepper
1/4 cup white wine
1 teaspn chopped fresh rosemay or thyme

1/2 medium butternut squash, peeled, seeded and cut into 1/2 inch dice
Wholewheat pie crust

Add onions to oil and sprinkle with 1/2 teaspn salt. When onions are done add 2 tablespns wine. Cook until most of the moisture has gone. Season to taste.
Steam the squash over boiling water until tender.
Prehead oven to 375F.
Spoon onions into center of crust and sprinkle squash evenly over onions. Fold edge of crust over filling. Bake 25 minutes.

Sure I would use chicken breast slice thin and fan it out over the top of the tart.