Run a lime wedge around the rim of each glass, then dip in Tajin seasoning to coat the rim. Set aside.
Combine the frozen watermelon cubes, watermelon juice, tequila, orange liqueur, fresh lime juice, and jalapeño simple syrup in a blender.
Blend until smooth and slushy. If the mixture is too thick, add a little more watermelon juice and blend again. If it's too thin, add more frozen watermelon.
Pour into prepared glasses and garnish with watermelon wedges, jalapeño slices, and/or lime wheels.
Serve immediately.
Notes
1. Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed. The nutritional value will vary depending on the types and brands of ingredients used. It does not include the nutrients for any substitutions.2. Be sure to check out the Key Ingredients along with the Recipe Tips and Notes sections found in the post, for more tips, options, substitutions, and variations for this recipe! You will also find step-by-step photos there.