Prepare 2-3 baking sheets with parchment paper. Set aside.
Sift almond flour, powdered sugar, and matcha into a bowl. Whisk until well combined. Add half the egg whites (55g) and stir until a thick paste forms. Cover and set aside.
Add remaining 55g of egg whites into the bowl of a stand mixer with a whisk attachment and set aside.
Place 150g of granulated sugar and 90mL of water in a stainless steel saucepan. Attach a candy thermometer and cook on stovetop until mixture reaches 244 degrees F. Turn off the heat and set aside while you immediately prepare the remaining egg whites (Do not pause cooking at this step for any reason!).
Beat the egg whites from step 3 until soft peaks form.
CAREFULLY drizzle in the hot sugar solution with the mixer running on low. Increase speed to high and beat until stiff peaks form.
Take 1/3 of the beaten egg whites and mix into the almond flour paste from step 2 until fully incorporated.
Fold the remaining 2/3 of the beaten egg whites into your batter using a silicone spatula for your macaronage. When you hold your spatula with the batter dripping off the edge, it should spill down in a slow stream that looks like a ribbon back into the bowl. After a few seconds, the "ribbon" should melt back into a blob. If it holds its defined shape, you need to keep mixing. If it melts immediately back into a liquidy batter, you've overmixed and need to start the entire recipe over.
Scoop batter into a piping bag fitted with a round tip. Pipe 1.5 inch circles spaced evenly apart on your prepared baking sheets. In a typical 9x13" sheet, I pipe about 4 circles across and 5 rows down, for about 20 macaron shells per sheet.
Holding the baking sheet in both hands, firmly rap the sheet onto a table or counter to pop any air bubbles in your piped macarons.
Preheat your oven to 325 degrees F and set piped macarons aside, uncovered, for at least 20 minutes.
Bake macaron shells in an even layer in your oven for 13-15 minutes, or until the macarons pull easily off the parchment. It's better to overbake than underbake. If you can't fit all your baking sheets in one even layer in your oven, you will have to bake in batches; the remaining unbaked macarons can be left out uncovered while you wait.
Let baked macaron shells cool completely while you prepare the strawberry filling.