Set a large nonstick skillet or griddle over medium heat. Lightly grease it and let it warm while you mix the batter.
In a medium bowl, whisk the flour, sugar, baking powder, baking soda, and salt. Simple, just combined.
In a separate bowl, whisk the milk, egg, melted butter, and vanilla until smooth.
Pour the wet mixture into the dry. Stir with a spatula until no dry streaks remain. A few small lumps are fine. If it feels very thick, add 1 tablespoon more milk.
Gently fold in the diced strawberries and mini chocolate chips. Let the batter sit for about 5 minutes, a little rest helps it puff.
Scoop 1/4 cup batter per pancake onto the hot pan. Cook until the edges look set and the surface is dotted with little bubbles, about 2 to 3 minutes.
Flip carefully and cook the other side until golden, 1 to 2 minutes. Adjust the heat if they’re browning too fast, medium to medium-low is usually the sweet spot.
Repeat with remaining batter, greasing the pan lightly as needed. If strawberries leave a little moisture behind, wipe the pan between batches.
Serve warm with extra strawberries and maple syrup. Maybe a spoon of yogurt if you like a creamy contrast.