Gently mix together the strawberries, raspberries, blueberries, kiwis, apple, and mint in a large bowl.
Stir in the lemon juice, granulated sugar, and brown sugar. Cover and refrigerate while you make the cinnamon chips.
For the cinnamon chips
Preheat the oven to 350°F and line 2 large baking sheets with parchment paper. (See the Notes section below for alternative cooking methods.)
Make the cinnamon-sugar mixture by mixing together the cinnamon and sugar in a small bowl.
Spray the flour tortillas with cooking spray on both sides, then sprinkle with the cinnamon sugar on both sides.
Stack the tortillas on top of each other, then slice them into eighth wedges/triangles.
Arrange the cinnamon chips in a single layer on the prepared baking sheets and bake for 12 minutes, flipping halfway through.
Allow the chips to cool for about 10 minutes to allow them to crisp up, and serve with the fruit salsa.
Notes
Adjust the amount of sugar to your liking based on the sweetness of the fruit. Add more sugar if the fruit isn't very ripe, or use less if the fruit is very ripe. You can also omit the sugar altogether or use honey instead.
The longer the fruit salsa sits, the more juices the fruit will release. This salsa is best enjoyed within 3 days.
To air fry the cinnamon chips, add them to the air fryer basket in a single layer and air fry at 400°F for 4-5 minutes until crispy.
To fry the cinnamon chips, heat some vegetable oil in a medium skillet over medium-high heat. When hot, fry until crispy and golden brown. Transfer to a plate lined with paper towels to drain off any excess oil.